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Synthesis, Structure, and Catalytic Applications for ortho- and meta-Carboranyl Based NBN Pincer-Pd Complexes

Synthesis, Structure, and Catalytic Applications for ortho- and meta-Carboranyl Based NBN Pincer-Pd Complexes

Min Ying Tsang, Clara Viñas, Francesc Teixidor, José Giner Planas*, Nerea Conde, Raul SanMartin, María Teresa Herrero, Esther Domínguez, Agustí Lledós, Pietro Vidossich, and Duane Choquesillo-Lazarte.    Inorg. Chem., 2014, 53 (17), pp 9284–9295

Neutron diffraction, magnetic, and magnetoelectric studies of phase transitions in multiferroic Mn0.90Co0.10WO4

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18-12-2012 11-42-48

I. Urcelay-Olabarria*, E. Ressouche, A. A. Mukhin, V. Yu. Ivanov, A. M. Balbashov, G. P. Vorobev, Yu. F. Popov, A. M. Kadomtseva, J. L García-Muñoz, and V. Skumryev; 

Phys. Rev. B  Volume 85  Issue 9

DOI: 10.1103/PhysRevB.85.094436


We have studied various spontaneous and magnetic-field-induced phase transitions in single crystals of multiferroic Mn0.9Co0.1WO4 using magnetic and magnetoelectric measurements and neutron diffraction. Compared to pure MnWO4, our data consistently confirm that the anisotropic Co2+ ions induce reorientation of the spin cycloid structure to the ac plane and reveal Pa and Pc components of spontaneous electric polarization. Field-induced phase transitions accompanied by anomalies of magnetic susceptibility and suppression of both Pa and Pc polarizations have been observed for Hc (∼3 T) and Ha (∼8.5 T). Neutron diffraction has revealed that in both cases the spin cycloid plane flops in direction almost perpendicular to H, i.e., close to the ab and bc planes, respectively. Parameters describing the magnetic structures including wave vectors, orientations of the main elliptical axes, etc., have been determined in all spontaneous and field-induced states.

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