Yanda, Premakumar ; Ghara, Somnath ; Sundaresan, A. (2018) Spontaneous electric polarization in the B -site magnetic spinel GeCu 2 O 4 Solid State Communications, 272 . pp. 53-56. ISSN 0038-1098
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Official URL: http://doi.org/10.1016/j.ssc.2018.01.017
Related URL: http://dx.doi.org/10.1016/j.ssc.2018.01.017
Abstract
We report the observation of a spontaneous electric polarization at the antiferromagnetic ordering temperature (TN ∼ 33 K) of Cu2+ ions in the B-site magnetic spinel GeCu2O4, synthesized at high pressure and high temperature. This compound is known to crystallize in a tetragonal structure (space group I41/amd) due to Jahn-Teller distortion of Cu2+ ions and exhibit a collinear up-up-down-down (↑↑↓↓) antiferromagnetic spin configuration below TN. We found a clear dielectric anomaly at TN, where an electric polarization appears in the absence of applied magnetic field. The electric polarization is suppressed by applied magnetic fields, which demonstrates that the compound GeCu2O4 is a type-II multiferroic.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 119988 |
| Deposited On: | 21 Jun 2021 07:13 |
| Last Modified: | 21 Jun 2021 07:13 |
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