Stabilization of Ferromagnetism in BiFeO3:Ho at Hydrostatic Pressure
- Authors: Arslanov T.R.1, Kallaev S.N.1, Reznichenko L.A.2
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Affiliations:
- Institute of Physics, Dagestan Scientific Center
- Research Institute of Physics
- Issue: Vol 107, No 8 (2018)
- Pages: 477-482
- Section: Condensed Matter
- URL: https://journals.rcsi.science/0021-3640/article/view/161039
- DOI: https://doi.org/10.1134/S0021364018080088
- ID: 161039
Cite item
Abstract
The isothermal magnetization of the Bi1 – xHoxFeO3 (x = 0−0.2) multiferroic has been studied at a hydrostatic pressure up to 9 GPa in the range of room temperatures. A new anomaly at PC ≈ 3.81 GPa related to intermediate phases between the structural transition R3c → Pnma has been found against the background of the pressure-induced antiferromagnetic ordering in BiFeO3 (BFO) at P ≈ 2.59 GPa. It is established that the ferromagnetic behavior under pressure depends on the Ho impurity concentration: PC decreases at 0.05 ≤ x ≤ 0.1 because of the decrease in R3c bond lengths in the structure, and the stabilization of ferromagnetism is implemented at 0.1 ≤ x ≤ 0.2 probably because of the coexistence of the R3c and Pnma phases. The results of studies indicate that, in Bi1 – xHoxFeO3 with x = 0.2, the transition pressure PC = 3.7 GPa exceeds the values for BFO doped with other 4f elements (Eu, Y, Sm) in the region R3c → Pnma of the transition.
About the authors
T. R. Arslanov
Institute of Physics, Dagestan Scientific Center
Author for correspondence.
Email: arslanovt@gmail.com
Russian Federation, Makhachkala, 367003
S. N. Kallaev
Institute of Physics, Dagestan Scientific Center
Email: arslanovt@gmail.com
Russian Federation, Makhachkala, 367003
L. A. Reznichenko
Research Institute of Physics
Email: arslanovt@gmail.com
Russian Federation, Rostov-on-Don, 344090
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