Oxides for new-generation electronics

New Sensitive and Selective Chemical Sensors for Ni2+ and Cu2+ Ions: Insights into the Sensing Mechanism through DFT Methods

Written by icmab on 09 April 2021.

Título : New Sensitive and Selective Chemical Sensors for Ni²⁺ and Cu²⁺ Ions: Insights into the Sensing Mechanism through DFT Methods

Autores: Manuel A. Treto-Suárez, Jorge Tapia, Yoan Hidalgo-Rosa, Dayan Páez-Hernández, Elies Molins, Ximena Zarate*, and Eduardo Schott*

Citation:

J. Phys. Chem. A 2020, 124, 32, 6493–6503

Publication Date:July 8, 2020

DOI: https://doi.org/10.1021/acs.jpca.0c03834

PlumX: New Sensitive and Selective Chemical Sensors for Ni2+ and Cu2+ Ions: Insights into the Sensing Mechanism through DFT Methods

We report the synthesis and theoretical study of two new colorimetric chemosensors with special selectivity and sensitivity to Ni²⁺ and Cu²⁺ ions over other metal cations in the CH₃CN/H₂O solution. Compounds (E)-4-((2-nitrophenyl)diazenyl)-N,N-bis(pyridin-2-ylmethyl)aniline (A) and (E)-4-((3-nitrophenyl)diazenyl)-N,N-bis(pyridin-2-ylmethyl)aniline (B) exhibited a drastic color change from yellow to colorless, which allows the detection of the mentioned metal cations through different techniques.

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Silicon nanowires as acetone-adsorptive media for diabetes diagnosis

Written by icmab on 06 April 2021.

Autores: Francisco De Santiago, José Eduardo Santana, Álvaro Miranda, Luis Antonio Pérez, Riccardo Rurali, Miguel Cruz-Irissona

Citation: Applied Surface Science, Volume 547, 2021, 149175, ISSN 0169-4332,
https://doi.org/10.1016/j.apsusc.2021.149175

PlumX: Silicon nanowires as acetone-adsorptive media for diabetes diagnosis

Early detection of diabetes, a worldwide health issue, is key for its successful treatment. Acetone is a marker of diabetes, and efficient, non-invasive detection can be achieved with the use of nanotechnology. In this paper we investigate the effect of acetone adsorption on the electronic properties of silicon nanowires (SiNWs) by means of density functional theory.

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Soft‐Chemistry‐Assisted On‐Chip Integration of Nanostructured α‐Quartz Microelectromechanical System

Written by icmab on 30 March 2021.

Título : Soft‐Chemistry‐Assisted On‐Chip Integration of Nanostructured α‐Quartz Microelectromechanical System

Autores: Claire Jolly, Andres Gomez, David Sánchez‐Fuentes, Dilek Cakiroglu, Raïssa Rathar, Nicolas Maurin, Ricardo Garcia‐Bermejo, Benoit Charlot, Martí Gich, Michael Bahriz, Laura Picas, Adrian Carretero‐Genevrier

Citation: Adv. Mater. Technol. 2021, 2000831
DOI: https://doi.org/10.1002/admt.202000831

PlumX: Soft‐Chemistry‐Assisted On‐Chip Integration of Nanostructured α‐Quartz Microelectromechanical System

The development of advanced piezoelectric α‐quartz microelectromechanical system (MEMS) for sensing and precise frequency control applications requires the nanostructuration and on‐chip integration of this material on silicon material.

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Critical Effect of Bottom Electrode on Ferroelectricity of Epitaxial Hf0.5Zr0.5O2 Thin Films

Written by icmab on 26 March 2021.

Título : Critical Effect of Bottom Electrode on Ferroelectricity of Epitaxial Hf_0.5Zr_0.5O₂ Thin Films

Autores: Saúl Estandía, Jaume Gazquez, Maria Varela, N. Dix, Mengdi Qian, Raul Solanas, Ignasi Fina and Florencio Sanchez

Citation:

J. Mater. Chem. C, 9, 3486 - 3492 (2021)
DOI: https://doi.org/10.1039/D0TC05853J

PlumX: Critical Effect of Bottom Electrode on Ferroelectricity of Epitaxial Hf_0.5Zr_0.5O₂ Thin Films

Epitaxial orthorhombic Hf_0.5Zr_0.5O₂ (HZO) films on La_0.67Sr_0.33MnO₃ (LSMO) electrodes show robust ferroelectricity, with high polarization, endurance and retention. However, no similar results have been achieved using other perovskite electrodes so far. Here, LSMO and other perovskite electrodes are compared.

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Metallic Diluted Dimerization in VO2 Tweeds

Written by icmab on 19 March 2021.

Título : Metallic Diluted Dimerization in VO₂ Tweeds

Autores: Felip Sandiumenge, Laura Rodríguez, Miguel Pruneda, César Magén, José Santiso, Gustau Catalan

Citation: Adv. Mater. 2021, 2004374
DOI: https://doi.org/10.1002/adma.202004374

PlumX: Metallic Diluted Dimerization in VO2 Tweeds

Though first order transitions are thought to be abrupt, materials find cunning ways to smooth the jump. Here we show that VO₂ chooses making beautiful tapestries at the atomic scale. To see how, and how they affect its intriguing metal-insulator transition, continue reading:

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Facile Chemical Route to Prepare Water Soluble Epitaxial Sr3Al2O6 Sacrificial Layers for Free‐Standing Oxides

Written by icmab on 14 March 2021.

Título : Facile Chemical Route to Prepare Water Soluble Epitaxial Sr₃Al₂O₆ Sacrificial Layers for Free‐Standing Oxides

Autores: Pol Salles, Ivan Caño, Roger Guzman, Camilla Dore, Agustín Mihi, Wu Zhou, Mariona Coll

Citation: Adv. Mater. Interfaces 2021, 2001643.
DOI: https://doi.org/10.1002/admi.202001643

PlumX: Facile Chemical Route to Prepare Water Soluble Epitaxial Sr3Al2O6 Sacrificial Layers for Free‐Standing Oxides

The growth of epitaxial complex oxides has been essentially limited to specific substrates that can induce epitaxial growth and stand high temperature thermal treatments. These restrictions hinder the opportunity to manipulate and integrate such materials into new artificial heterostructures including the use of polymeric and silicon substrates and study emergent phenomena for novel applications.

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Non-volatile optical switch of resistance in photoferroelectric tunnel junctions

Written by icmab on 09 March 2021.

Autores: Xiao Long, Huan Tan, Florencio Sánchez, Ignasi Fina & Josep Fontcuberta

Citation: Nat Commun 12, 382 (2021).
https://doi.org/10.1038/s41467-020-20660-9

PlumX: Non-volatile optical switch of resistance in photoferroelectric tunnel junctions

In the quest for energy efficient and fast memory elements, optically controlled ferroelectric memories are promising candidates. Here, we show that, by taking advantage of the imprint electric field existing in the nanometric BaTiO₃ films and their photovoltaic response at visible light, the polarization of suitably written domains can be reversed under illumination. We exploit this effect to trigger and measure the associate change of resistance in tunnel devices.

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Rapid Thermal Annealing of Double Perovskite Thin Films Formed by Polymer Assisted Deposition

Written by icmab on 23 February 2021.

Título : Rapid Thermal Annealing of Double Perovskite Thin Films Formed by Polymer Assisted Deposition

Autores: Hailin Wang, Carlos Frontera, Benjamín Martínez * and Narcís Mestres *

Citation: Materials 2020, 13(21), 4966
DOI: https://doi.org/10.3390/ma13214966

PlumX: Rapid Thermal Annealing of Double Perovskite Thin Films Formed by Polymer Assisted Deposition

The annealing process is an important step common to epitaxial films prepared by chemical solution deposition methods. It is so because the final microstructure of the films can be severely affected by the precise features of the thermal processing. In this work we analyze the structural and magnetic properties of double perovskite La₂CoMnO₆ and La₂NiMnO₆ epitaxial thin films prepared by polymer-assisted deposition (PAD) and crystallized by rapid thermal annealing (RTA).

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Local electric-field control of multiferroic spin-spiral domains in TbMnO3

Written by icmab on 05 February 2021.

Título : Local electric-field control of multiferroic spin-spiral domains in TbMnO₃

Autores: Peggy Schoenherr, Sebastian Manz, Lukas Kuerten, Konstantin Shapovalov, Ayato Iyama, Tsuyoshi Kimura, Manfred Fiebig & Dennis Meier

Citation:

npj Quantum Mater. 5, 86 (2020)
DOI: https://doi.org/10.1038/s41535-020-00289-z

PlumX: Metallacarboranes as Photoredox Catalysts in Water

Spin-spiral multiferroics exhibit a magnetoelectric coupling effects, leading to the formation of hybrid domains with inseparably entangled ferroelectric and antiferromagnetic order parameters. Due to this strong magnetoelectric coupling, conceptually advanced ways for controlling antiferromagnetism become possible and it has been reported that electric fields and laser pulses can reversibly switch the antiferromagnetic order.

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Thermal evolution of ferroelectric behavior in epitaxial Hf0.5Zr0.5O2

Written by icmab on 15 December 2020.

Título : Thermal evolution of ferroelectric behavior in epitaxial Hf_0.5Zr_0.5O₂

Autores: J. W. Adkins, I. Fina, F. Sánchez, S. R. Bakaul, and J. T. Abiade

Citation:

Appl. Phys. Lett. 117, 142902 (2020)
DOI: https://doi.org/10.1063/5.0015547

PlumX: Thermal evolution of ferroelectric behavior in epitaxial Hf0.5Zr0.5O2

Herein, we report a cryogenic-temperature study on the evolution of the ferroelectric properties of epitaxial Hf_0.5Zr_0.5O₂ thin films on silicon. Wake-up, endurance, and fatigue of these films are found to be intricately correlated, strongly hysteretic, and dependent on available thermal energy.

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Engineering Polar Oxynitrides: Hexagonal Perovskite BaWON2

Written by icmab on 11 December 2020.

Título : Engineering Polar Oxynitrides: Hexagonal Perovskite BaWON₂

Autores: Dr. Judith Oró‐Solé, Dr. Ignasi Fina, Dr. Carlos Frontera, Dr. Jaume Gàzquez, Dr. Clemens Ritter, Marina Cunquero, Dr. Pablo Loza‐Alvarez, Dr. Sergio Conejeros, Prof. Pere Alemany, Prof. Enric Canadell, Prof. Josep Fontcuberta, Prof. Amparo Fuertes.

Citation: Angew. Chem. Int. Ed. 2020, 59, 18395 – 18399.
DOI: https://doi.org/10.1002/ange.202006519

PlumX: Engineering Polar Oxynitrides: Hexagonal Perovskite BaWON2

Non‐centrosymmetric polar compounds have important technological properties. Reported perovskite oxynitrides show centrosymmetric structures, and for some of them high permittivities have been observed and ascribed to local dipoles induced by partial order of nitride and oxide.

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Mechanical Softness of Ferroelectric 180° Domain Walls

Written by icmab on 02 December 2020.

Autores: Christina Stefani, Louis Ponet, Konstantin Shapovalov, Peng Chen, Eric Langenberg, Darrell G. Schlom, Sergey Artyukhin, Massimiliano Stengel, Neus Domingo, and Gustau Catalan.

Citation: Phys. Rev. X 10, 041001 – Published 1 October 2020
DOI:https://doi.org/10.1103/PhysRevX.10.041001

PlumX: Mechanical Softness of Ferroelectric 180° Domain Walls

Using scanning probe microscopy, we measure the out-of-plane mechanical response of ferroelectric 180° domain walls and observe that, despite separating domains that are mechanically identical, the walls appear mechanically distinct—softer—compared to the domains.

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Discovery of highly polarizable semiconductors BaZrS3 and Ba3Zr2S7

Written by icmab on 27 November 2020.

Título : Discovery of highly polarizable semiconductors BaZr S₃ and Ba₃ Zr₂ S₇

Autores: Stephen Filippone, Boyang Zhao, Shanyuan Niu, Nathan Z. Koocher, Daniel Silevitch, Ignasi Fina, James M. Rondinelli, Jayakanth Ravichandran, and R. Jaramillo.

Citation: Phys. Rev. Materials 4, 091601(R) – Published 8 September 2020.
DOI: https://doi.org/10.1103/PhysRevMaterials.4.091601

PlumX: Discovery of highly polarizable semiconductors BaZrS3 and Ba3Zr2S7

There are few known semiconductors exhibiting both strong optical response and large dielectric polarizability. Inorganic materials with large dielectric polarizability tend to be wide-band gap complex oxides. Semiconductors with a strong photoresponse to visible and infrared light tend to be weakly polarizable. Interesting exceptions to these trends are halide perovskites and phase-change chalcogenides.

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Magnetic droplet solitons

Written by icmab on 10 November 2020.

Autores: Ferran Macià, and Andrew D. Kent.

Citation: Journal of Applied Physics
https://doi.org/10.1063/5.0018251

PlumX: Magnetic droplet solitons

Magnetic droplet solitons are dynamical magnetic textures that form due to an attractive interaction between spin waves in thin films with perpendicular magnetic anisotropy. Spin currents and the spin torques associated with these currents enable their formation as they provide a means to excite non-equilibrium spin-wave populations and compensate their decay.

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Epitaxial Ferroelectric La-doped Hf0.5Zr0.5O2 Thin Films

Written by icmab on 03 November 2020.

Título : Epitaxial Ferroelectric La-Doped Hf_0.5Zr_0.5O₂ Thin Films

Autores: Tingfeng Song, Romain Bachelet, Guillaume Saint-Girons, Raul Solanas, Ignasi Fina, and Florencio Sanchez

Citation: ACS Appl. Electron. Mater. 2020
Publication Date: September 14, 2020
https://doi.org/10.1021/acsaelm.0c00560

PlumX: Epitaxial Ferroelectric La-doped Hf0.5Zr0.5O2 Thin Films

Doping ferroelectric Hf_0.5Zr_0.5O₂ with La is a promising route to improve endurance. However, the beneficial effect of La on the endurance of polycrystalline films may be accompanied by degradation of the retention. We have investigated the endurance - retention dilemma in La-doped epitaxial films.

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Conductivity control via minimally invasive anti-Frenkel defects in a functional oxide

Written by icmab on 23 October 2020.

Autores: Donald M. Evans, Theodor S. Holstad, Aleksander B. Mosberg, Didrik R. Småbråten, Per Erik Vullum, Anup L. Dadlani, Konstantin Shapovalov, Zewu Yan, Edith Bourret, David Gao, Jaakko Akola, Jan Torgersen, Antonius T. J. van Helvoort, Sverre M. Selbach & Dennis Meier.

Citation: Nat. Mater. (2020)
https://doi.org/10.1038/s41563-020-0765-x

PlumX: Conductivity control via minimally invasive anti-Frenkel defects in a functional oxide

Utilizing quantum effects in complex oxides, such as magnetism, multiferroicity and superconductivity, requires atomic-level control of the material’s structure and composition. In contrast, the continuous conductivity changes that enable artificial oxide-based synapses and multiconfigurational devices are driven by redox reactions and domain reconfigurations, which entail long-range ionic migration and changes in stoichiometry or structure.

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On the Promotion of Catalytic Reactions by Surface Acoustic Waves

Written by icmab on 25 September 2020.

Surface acoustic waves (SAW) allow to manipulate surfaces with potential applications in catalysis, sensor and nanotechnology. SAWs were shown to cause a strong increase in catalytic activity and selectivity in many oxidation and decomposition reactions on metallic and oxidic catalysts.

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Fatigue and retention in the growth window of ferroelectric Hf0.5Zr0.5O2 thin films

Written by icmab on 22 September 2020.

Título : Fatigue and retention in the growth window of ferroelectric Hf_0.5Zr_0.5O₂ thin films

Autores: Jike Lyu, Ignasi Fina, and Florencio Sánchez.
Appl. Phys. Lett. 117, 072901 (2020)
DOI: 10.1063/5.0017738

The growth window of epitaxial Hf_0.5Zr_0.5O₂ is established taking into account the main ferroelectric properties that films have to present simultaneously: high remanent polarization, low fatigue, and long retention.

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Visualization of moiré superlattices

Written by icmab on 18 September 2020.

Moiré superlattices in van der Waals heterostructures have given rise to a number of emergent electronic phenomena due to the interplay between atomic structure and electron correlations. Indeed, electrons in these structures have been recently found to exhibit a number of emergent properties that the individual layers themselves do not exhibit.

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Blocking of Conducting Channels Widens Window for Ferroelectric Resistive Switching in Interface‐Engineered Hf0.5Zr0.5O2 Tunnel Devices

Written by icmab on 21 July 2020.

Electroresistance is the functional property of resistive switching devices exploited in data storage and computing.

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Siesta: Recent developments and applications

Written by icmab on 07 July 2020.

A review of the present status, recent enhancements, and applicability of the Siesta program is presented. Since its debut in the mid-1990s, Siesta’s flexibility, efficiency, and free distribution have given advanced materials simulation capabilities to many groups worldwide.

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Weak localization competes with the quantum oscillations in a natural electronic superlattice: The case of Na1.5(PO2)4(WO3)20

Written by icmab on 03 July 2020.

We report an investigation of the combined structural and electronic properties of the bronze ${Na}_{1.5} {({PO}_{2})}_{4} {({WO}_{3})}_{20}$ .

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Photoinduced persistent electron accumulation and depletion in LaAlO3/SrTiO3 quantum wells

Written by icmab on 23 June 2020.

Spike-timing dependent plasticity (STDP) is a fundamental concept in neurobiology. Briefly, the relative timing of two neuron spikes reinforces or weakens the synapse between them, so that events caused by another should trigger spikes in a particular time order.

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Local manipulation of metamagnetism by strain nanopatterning

Written by icmab on 19 June 2020.

Near any phase transition order parameters of materials are strongly coupled to materials’ properties. Metamagnetic materials show phase transition between two magnetically ordered phases.

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High polarization, endurance and retention in sub-5 nm Hf0.5Zr0.5O2 films

Written by Jags on 05 June 2020.

Ferroelectric HfO₂ is a promising material for new memory devices, but significant improvement of important properties is necessary to reach applications. However, precedent literature shows that a dilemma between polarization, endurance and retention exists.

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Domain-Matching Epitaxy of Ferroelectric Hf0.5Zr0.5O2(111) on La2/3Sr1/3MnO3(001)

Written by Jags on 22 May 2020.

Epitaxial ferroelectric HfO₂ films are the most suitable to investigate intrinsic properties of the material and for prototyping emerging devices. Ferroelectric Hf_0.5Zr_0.5O₂(111) films were epitaxially stabilized on La_2/3Sr_1/3MnO₃(001) electrodes.

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Nanoscale rotational dynamics of four independent rotators confined in crowded crystalline layers

Written by icmab on 12 May 2020.

We report a study where Car–Parrinello molecular dynamics simulations and variable-temperature (30–300 K) ¹H spin–lattice relaxation time experiments nicely complement each other.

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In operando adjustable orbital polarization in LaNiO3 thin films

Written by icmab on 08 May 2020.

The different occupancy of electronic orbitals, the so-called orbital polarization, is a key parameter determining electric and magnetic properties of materials.

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Strain control of the competition between metallic and semiconducting states in single-layers of TaSe3

Written on 01 May 2020.

José Ángel Silva-Guillén and Enric Canadell. 2D Materials, Volume 7, Number 2.

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Flexible Antiferromagnetic FeRh Tapes as Memory Elements

Written on 28 April 2020.

Ignasi Fina*, Nico Dix, Enric Menéndez, Enric Menéndez, Anna Crespi, Michael Foerster, Lucia Aballe, Florencio Sánchez, Josep Fontcuberta*. ACS Appl. Mater. Interfaces 2020, XXXX, XXX, XXX-XXX. Publication Date:March 9, 2020

Hits: 552

Generation and imaging of magnetoacoustic waves over millimeter distances

Written on 14 April 2020.

Blai Casals, Nahuel Statuto, Michael Foerster, Alberto Hernández-Mínguez, Rafael Cichelero, Peter Manshausen, Ania Mandziak, Lucía Aballe, Joan Manel Hernàndez, and Ferran Macià. Phys. Rev. Lett.

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Structural, magnetic and electronic properties of EuTi0.5W0.5O3-xNx perovskite oxynitrides

Written on 10 April 2020.

Judith Oró-Solé, Carlos Frontera, Ashley P. Black, Augustin Castets, Karen L.Velásquez-Méndez, Josep Fontcuberta, Amparo Fuertes. Journal of Solid State Chemistry Volume 286, June 2020, 121274.

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Magneto-ionic control of magnetism in two-oxide nanocomposite thin films comprising mesoporous cobalt ferrite conformally nanocoated with HfO2

Written on 24 March 2020.

Shauna Robbennolt,* Pengmei Yu, Aliona Nicolenco, Pau Mercier Fernandez, Mariona Coll and Jordi Sort. Nanoscale, 2020, Advance Article.

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Nitride tuning of transition metal perovskites

Written on 06 March 2020.

Amparo Fuertes. APL Materials 8, 020903 (2020);

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Atomistic simulations of COSAN: amphiphiles without a Head‐and‐Tail design have a “head and tail” surfactant behavior

Written by icmab on 04 February 2020.

David C Malaspina, Clara Viñas, Francesc Teixidor, Jordi Faraudo. Angew. Chem. Int. Ed.. Accepted Author Manuscript.

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Electric-field-induced avalanches and glassiness of mobile ferroelastic twin domains in cryogenic SrTi O 3

Written by icmab on 28 January 2020.

Blai Casals, Sebastiaan van Dijken, Gervasi Herranz, and Ekhard K. H. Salje. Phys. Rev. Research 1, 032025(R) – Published 26 November 2019.

Hits: 403

Unraveling Ferroelectric Polarization and Ionic Contributions to Electroresistance in Epitaxial Hf0.5Zr0.5O2 Tunnel Junctions

Written by icmab on 17 January 2020.

Milena Cervo Sulzbach, Saúl Estandía, Xiao Long, Jike Lyu, Nico Dix, Jaume Gàzquez, Matthew F. Chisholm, Florencio Sánchez, Ignasi Fina, Josep Fontcuberta. Adv. Electron. Mater.2019, 1900852.

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Rotational polarization nanotopologies in BaTiO3/SrTiO3 superlattices

Written by icmab on 07 January 2020.

Saúl Estandía, Florencio Sánchez,* Matthew F. Chisholm and Jaume Gázquez. Nanoscale, 2019, Advance Article.

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Chiral EDT-TTF precursors with one stereogenic centre: substituent size modulation of the conducting properties in the (R-EDT-TTF)2PF6 (R = Me or Et) series

Written by icmab on 27 December 2019.

Nabil Mroweh, Pascale Auban-Senzier, Nicolas Vanthuyne, Enric Canadell and Narcis Avarvari*. J. Mater. Chem. C, 2019,7, 12664-12673.

Hits: 638

Double-cell superstructure and vacancy ordering in tensile-strained metallic thin films of Pr0.50Ca0.50 CoO 3 on LaAlO3

Written by icmab on 24 December 2019.

Jessica Padilla-Pantoja, Xavier Torrelles, Jaume Gazquez, Juan Rubio-Zuazo, Javier Blasco, Javier Herrero-Martín, and Jose Luis García-Muñoz. Phys. Rev. Materials 3, 104407.

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