We present a comprehensive study of the magnetic properties of the strongly anisotropic ferrimagnet $ErFe_5Al_7$ in pulsed magnetic fields up to 30 T applied along the hard magnetization axis within the basal plane of the tetragonal lattice around the compensation temperature ($T_comp$). Macroscopic measurements showed two anomalies at about 8 T and 25 T in a small temperature range around $T_comp$. High-field x-ray magnetic circular dichroism (XMCD) data at the Er $M_5$- and the Fe $L_3$-edge resonances provide insight into the element-selective magnetization processes, revealing a coherent rotation of Er $4f$ and Fe $3d$ moments, with stepwise jumps including an unexpected one from an easy to a hard magnetization axis. XMCD at the Er $L_3$-edge resonance elucidates the role of Er $5d$ electrons in coupling the Er $4f$ and the Fe $3d$ moments. Finally, an in-plane anisotropy constant was evaluated from a simulation of the magnetization process at temperatures well below $T_comp$ using a two-sublattice model.
Description
Phys. Rev. B 109, 094404 (2024) - Field-induced magnetic transitions in the highly anisotropic ferrimagnet ${\text{ErFe}}_{5}{\text{Al}}_{7}$ studied by high-field x-ray magnetic dichroism
%0 Journal Article
%1 PhysRevB.109.094404
%A Yamamoto, Sh.
%A Gorbunov, D. I.
%A Prokhnenko, O.
%A Weschke, E.
%A Miyata, A.
%A Diaz-Ortega, I. F.
%A Strohm, C.
%A Duc, F.
%A Henriques, M. S.
%A Gazizulina, A.
%A Uhlarz, M.
%A Mathon, O.
%A Andreev, A. V.
%A Nojiri, H.
%A Wosnitza, J.
%D 2024
%I American Physical Society
%J Phys. Rev. B
%K b
%N 9
%P 094404
%R 10.1103/PhysRevB.109.094404
%T Field-induced magnetic transitions in the highly anisotropic ferrimagnet ErFe$_5$Al$_7$ studied by high-field x-ray magnetic dichroism
%U https://link.aps.org/doi/10.1103/PhysRevB.109.094404
%V 109
%X We present a comprehensive study of the magnetic properties of the strongly anisotropic ferrimagnet $ErFe_5Al_7$ in pulsed magnetic fields up to 30 T applied along the hard magnetization axis within the basal plane of the tetragonal lattice around the compensation temperature ($T_comp$). Macroscopic measurements showed two anomalies at about 8 T and 25 T in a small temperature range around $T_comp$. High-field x-ray magnetic circular dichroism (XMCD) data at the Er $M_5$- and the Fe $L_3$-edge resonances provide insight into the element-selective magnetization processes, revealing a coherent rotation of Er $4f$ and Fe $3d$ moments, with stepwise jumps including an unexpected one from an easy to a hard magnetization axis. XMCD at the Er $L_3$-edge resonance elucidates the role of Er $5d$ electrons in coupling the Er $4f$ and the Fe $3d$ moments. Finally, an in-plane anisotropy constant was evaluated from a simulation of the magnetization process at temperatures well below $T_comp$ using a two-sublattice model.
@article{PhysRevB.109.094404,
abstract = {We present a comprehensive study of the magnetic properties of the strongly anisotropic ferrimagnet ${\mathrm{ErFe}}_{5}{\mathrm{Al}}_{7}$ in pulsed magnetic fields up to 30 T applied along the hard magnetization axis within the basal plane of the tetragonal lattice around the compensation temperature (${T}_{\mathrm{comp}}$). Macroscopic measurements showed two anomalies at about 8 T and 25 T in a small temperature range around ${T}_{\mathrm{comp}}$. High-field x-ray magnetic circular dichroism (XMCD) data at the Er ${M}_{5}$- and the Fe ${L}_{3}$-edge resonances provide insight into the element-selective magnetization processes, revealing a coherent rotation of Er $4f$ and Fe $3d$ moments, with stepwise jumps including an unexpected one from an easy to a hard magnetization axis. XMCD at the Er ${L}_{3}$-edge resonance elucidates the role of Er $5d$ electrons in coupling the Er $4f$ and the Fe $3d$ moments. Finally, an in-plane anisotropy constant was evaluated from a simulation of the magnetization process at temperatures well below ${T}_{\mathrm{comp}}$ using a two-sublattice model.},
added-at = {2024-03-18T11:25:53.000+0100},
author = {Yamamoto, Sh. and Gorbunov, D. I. and Prokhnenko, O. and Weschke, E. and Miyata, A. and Diaz-Ortega, I. F. and Strohm, C. and Duc, F. and Henriques, M. S. and Gazizulina, A. and Uhlarz, M. and Mathon, O. and Andreev, A. V. and Nojiri, H. and Wosnitza, J.},
biburl = {https://www.bibsonomy.org/bibtex/208f8570ea7922f442ce0e13ac012c915/ctqmat},
day = 05,
description = {Phys. Rev. B 109, 094404 (2024) - Field-induced magnetic transitions in the highly anisotropic ferrimagnet ${\text{ErFe}}_{5}{\text{Al}}_{7}$ studied by high-field x-ray magnetic dichroism},
doi = {10.1103/PhysRevB.109.094404},
interhash = {90a3c3cc04931c23f42999a3617748ef},
intrahash = {08f8570ea7922f442ce0e13ac012c915},
journal = {Phys. Rev. B},
keywords = {b},
month = {03},
number = 9,
numpages = {11},
pages = 094404,
publisher = {American Physical Society},
timestamp = {2024-03-18T11:25:53.000+0100},
title = {Field-induced magnetic transitions in the highly anisotropic ferrimagnet ErFe$_{\mathbf{5}}$Al$_{\mathbf{7}}$ studied by high-field x-ray magnetic dichroism},
url = {https://link.aps.org/doi/10.1103/PhysRevB.109.094404},
volume = 109,
year = 2024
}