Spin-lattice and magnetoelectric couplings enhanced by orbital degrees of freedom in polar multiferroic semiconductors

V Kocsis, Y Tokunaga, T Rõõm, U Nagel, J Fujioka… - Physical Review Letters, 2023 - APS
Orbital degrees of freedom mediating an interaction between spin and lattice were predicted
to raise strong magnetoelectric effect, ie, to realize an efficient coupling between magnetic …

Orbital structures in spinel vanadates VO ( Fe, Mn)

Y Nii, H Sagayama, T Arima, S Aoyagi, R Sakai… - Physical Review B …, 2012 - APS
Spinel FeV 2 O 4 exhibits successive structural phase transitions, reflecting the interplay
between the Fe 2+(3 d 6) and V 3+(3 d 2) ions, both of which have orbital and spin degrees …

Even and odd crystal fields on Fe2+ ions, local lattice distortion parameters, electron-deformation interaction, and magnetoelectric coupling in FeCr2O4

KV Vasin, MV Eremin - Journal of Physics: Condensed Matter, 2021 - iopscience.iop.org
Within the framework of the quantum mechanical approach, the available experimental data
are analyzed to identify the electronic structure of the multiferroic FeCr 2 O 4. The relative …

High-pressure behavior of cuprospinel CuFe2O4: Influence of the Jahn-Teller effect on the spinel structure

A Kyono, SA Gramsch, Y Nakamoto… - American …, 2015 - pubs.geoscienceworld.org
Abstract The Jahn-Teller effect at Cu2+ in cuprospinel CuFe2O4 was investigated using
high-pressure single-crystal synchrotron X-ray diffraction techniques at beamline BL10A at …

The influence of the Jahn–Teller effect at Fe2+ on the structure of chromite at high pressure

A Kyono, SA Gramsch, T Yamanaka, D Ikuta… - Physics and Chemistry …, 2012 - Springer
The crystal structure of chromite FeCr 2 O 4 was investigated to 13.7 GPa and ambient
temperature with single-crystal X-ray diffraction techniques. The unit-cell parameter …

Evolution of magnetic and structural transitions and enhancement of magnetocaloric effect in

D Choudhury, T Suzuki, D Okuyama, D Morikawa… - Physical Review B, 2014 - APS
Magnetic, structural, and magnetocaloric properties have been investigated for a solid-
solution system, Fe 1− x Mn x V 2 O 4 (0.0≤ x≤ 1.0) with a spinel structure. As orbital-active …

Synthesis and Single Crystal Growth by Floating Zone Technique of FeCr2O4 Multiferroic Spinel: Its Structure, Composition, and Magnetic Properties

R Batulin, M Cherosov, A Kiiamov, A Zinnatullin… - Magnetochemistry, 2022 - mdpi.com
We present the new synthesis root of spinel-structure FeCr2O4 and its single crystal growth
by the optical floating zone method, ensuring its single phase and near-ideal composition …

Orthorhombic distortion and orbital order in the vanadium spinel

S Kawaguchi, H Ishibashi, S Nishihara, S Mori… - Physical Review B, 2016 - APS
Using synchrotron and neutron diffraction measurements, we find a low-temperature
orthorhombic phase in vanadium spinel FeV 2 O 4. The orbital order of V 3+ ions with …

Magnetic and structural phase transitions in the spinel compound

J Ma, VO Garlea, A Rondinone, AA Aczel, S Calder… - Physical Review B, 2014 - APS
Neutron and x-ray diffraction, magnetic susceptibility, and specific heat measurements have
been used to investigate the magnetic and structural phase transitions of the spinel system …

X-ray magnetic circular dichroism study of an orbital ordered state in the spinel-type vanadium oxide

K Matsuura, H Sagayama, Y Nii, ND Khanh, N Abe… - Physical Review B, 2015 - APS
Spinel-type vanadium oxides FeV 2 O 4 and MnV 2 O 4 are considered to exhibit different
types of V 3+ orbital order from each other. In order to tackle this issue, the temperature …