Počet záznamů: 1  

High-field magnetization and magnetoelasticity of single crystalline HoFe.sub.5./sub.Al.sub.7./sub..

  1. 1.
    0427120 - FZU-D 2015 RIV GB eng J - Článek v odborném periodiku
    Gorbunov, Denis - Yasin, S. - Andreev, Alexander V. - Skourski, Y. - Arnold, Zdeněk - Zherlitsyn, S. - Wosnitza, J.
    High-field magnetization and magnetoelasticity of single crystalline HoFe5Al7.
    Journal of Physics-Condensed Matter. Roč. 26, č. 13 (2014), , "136001-1"-"136001-11". ISSN 0953-8984
    Grant CEP: GA ČR GAP204/12/0150
    Grant ostatní:AVČR(CZ) M100101203
    Institucionální podpora: RVO:68378271
    Klíčová slova: rare-earth intermetallics * magnetic anisotropy * ferrimagnetism * high magnetic fields * field-induced transition * pressure effect
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 2.346, rok: 2014

    Magnetization and ultrasound measurements are performed in pulsed magnetic fields up to 60 T on a ferrimagnetic HoFe5Al7 single crystal (TC = 216 K, compensation point Tcomp = 65 K) with a tetragonal crystal structure. The compound exhibits a high magnetic anisotropy of the easy-plane type, the easy-magnetization direction is [110] with the spontaneous magnetic moment 2 μB/f at T = 2 K. Along the easy axis, two first-order field-induced magnetic transitions are observed with sharp anomalies in the acoustic properties. Within molecular-field theory and using the high-field magnetization data the Ho-Fe inter-sublattice exchange parameter has been determined to be nHo-Fe = 4 T/μB. The magnetoelasticity has also been probed by magnetization measurements under hydrostatic pressure. TC decreases with a rate −10 K/GPa, whereas Tcomp increases as 3.5 K/GPa.
    Trvalý link: http://hdl.handle.net/11104/0232736