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Pis'ma v Zh. Èksper. Teoret. Fiz., 2018, Volume 107, Issue 8, Pages 499–504 (Mi jetpl5550)  

CONDENSED MATTER

Stabilization of ferromagnetism in BiFeO$_3$:Ho at hydrostatic pressure

T. R. Arslanova, S. N. Kallaeva, L. A. Reznichenkob

a Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, Russia
b Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia

Abstract: The isothermal magnetization of the Bi$_{1-x}$Ho$_x$FeO$_3$ ($x=0 - 0.2$) multiferroic has been studied at a hydrostatic pressure up to $9$ GPa in the range of room temperatures. A new anomaly at $P_C\approx3.81$ GPa related to intermediate phases between the structural transition $R3c\to Pnma$ has been found against the background of the pressure-induced antiferromagnetic ordering in BiFeO$_3$ (BFO) at $P\approx2.59$ GPa. It is established that the ferromagnetic behavior under pressure depends on the Ho impurity concentration: $P_C$ decreases at $0.05 \leqslant x\leqslant 0.1$ because of the decrease in $R3c$ bond lengths in the structure, and the stabilization of ferromagnetism is implemented at $0.1\leqslant x\leqslant 0.2$ probably because of the coexistence of the $R3c$ and $Pnma$ phases. The results of studies indicate that, in Bi$_{1-x}$Ho$_x$FeO$_3$ with $x=0.2$, the transition pressure $P_C=3.7$ GPa exceeds the values for BFO doped with other $4f$ elements (Eu, Y, Sm) in the region $R3c\to Pnma$ of the transition.

Funding Agency Grant Number
Russian Academy of Sciences - Federal Agency for Scientific Organizations 08
3.6371.2017/8.9


DOI: https://doi.org/10.7868/S0370274X18080064

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English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 107:8, 477–482

Bibliographic databases:

Received: 19.01.2018
Revised: 06.03.2018

Citation: T. R. Arslanov, S. N. Kallaev, L. A. Reznichenko, “Stabilization of ferromagnetism in BiFeO$_3$:Ho at hydrostatic pressure”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:8 (2018), 499–504; JETP Letters, 107:8 (2018), 477–482

Citation in format AMSBIB
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\paper Stabilization of ferromagnetism in BiFeO$_3$:Ho at hydrostatic pressure
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2018
\vol 107
\issue 8
\pages 499--504
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\crossref{https://doi.org/10.7868/S0370274X18080064}
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\jour JETP Letters
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\pages 477--482
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