TY - JOUR
T1 - Element selective magnetism in Ho 0.5 Nd 0.5 Fe 3 (BO 3 ) 4 single crystal probed with hard X-ray magnetic circular dichroism
AU - Platunov, Mikhail
AU - Kazak, Natalia
AU - Dudnikov, Viacheslav
AU - Temerov, Vladislav
AU - Gudim, Irina
AU - Knyazev, Yurii
AU - Gavrilkin, Sergey
AU - Dyadkin, Vadim
AU - Dovgaliuk, Iurii
AU - Chernyshov, Dmitry
AU - Hen, Amir
AU - Wilhelm, Fabrice
AU - Rogalev, Andrei
AU - Ovchinnikov, Sergei
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - We present a study of a Ho 0.5 Nd 0.5 Fe 3 (BO 3 ) 4 single crystal aiming at understanding the roles of each magnetic sublattices in magnetic transitions at low temperatures. The crystal structure is determined to have the R32 symmetry in whole studied temperature range but the crystal appears to be racemic. Element selective magnetic properties studied with X-ray magnetic circular dichroism at the L 2,3 -edges of Ho and Nd, and at the Fe K-edge at T = 3 K under magnetic fields of ±17 T are compared with the results of macroscopic magnetization measurements in pure and substituted crystals. All three magnetic sublattices are shown to be strongly coupled and to undergo a spin-reorientation transition when magnetic field is applied along the trigonal c-axis. On the contrary, when magnetic field is applied in the ab-plane only the holmium atoms exhibit a sizeable magnetization jump. This result allows us to conclude that the spin-flop transitions observed in macroscopic magnetization curves and associated anomalies of electric polarization are due to the Ho 3+ magnetic moment reorientation.
AB - We present a study of a Ho 0.5 Nd 0.5 Fe 3 (BO 3 ) 4 single crystal aiming at understanding the roles of each magnetic sublattices in magnetic transitions at low temperatures. The crystal structure is determined to have the R32 symmetry in whole studied temperature range but the crystal appears to be racemic. Element selective magnetic properties studied with X-ray magnetic circular dichroism at the L 2,3 -edges of Ho and Nd, and at the Fe K-edge at T = 3 K under magnetic fields of ±17 T are compared with the results of macroscopic magnetization measurements in pure and substituted crystals. All three magnetic sublattices are shown to be strongly coupled and to undergo a spin-reorientation transition when magnetic field is applied along the trigonal c-axis. On the contrary, when magnetic field is applied in the ab-plane only the holmium atoms exhibit a sizeable magnetization jump. This result allows us to conclude that the spin-flop transitions observed in macroscopic magnetization curves and associated anomalies of electric polarization are due to the Ho 3+ magnetic moment reorientation.
KW - Magnetic properties
KW - X-ray absorption
KW - X-ray magnetic circular dichroism
UR - http://www.scopus.com/inward/record.url?scp=85061832213&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2019.02.040
DO - 10.1016/j.jmmm.2019.02.040
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AN - SCOPUS:85061832213
SN - 0304-8853
VL - 479
SP - 312
EP - 316
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
ER -