TY - JOUR

T1 - Spin reorientation in GdMn2(Ge1-Si )2 compounds

AU - Mushnikov, N.

AU - Gerasimov, E.

AU - Terentev, P.

AU - Gaviko, V.

AU - Gorbunov, D.

N1 - X-ray diffraction studies ( Section 3.1 ) were carried out within the state assignment of Ministry of Science and Higher Education of RF (theme \u201CMagnet\u201D). Magnetization measurements and their analysis were performed under support of Russian Science Foundation (project No. 23-12-00265). High-field magnetization data were obtained in the framework of scientific program of National Center of Physics and Mathematics and HLD at HZDR, member of the European Magnetic Field Laboratory (EMFL).

PY - 2024/9/1

Y1 - 2024/9/1

N2 - Structure and magnetic properties of layered GdMn2(Ge1-xSix)2 (0 ≤ x ≤ 1) compounds were studied. All the compounds crystallize in the tetragonal ThCr2Si2-type structure. It was shown by magnetization measurements at low temperature on quasi-single crystals that, with increasing Si concentration, the easy magnetization direction reorients from the c-axis to the basal plane. The spin reorientation occurs via an angular phase. A model of three magnetic sublattices coupled by negative intersublattice exchange interactions was used to describe the field dependences of the magnetization. For GdMn2Ge2 and GdMn2(Ge0.9Si0.1)2 in the fields applied along the c-axis, seven different magnetic structures were predicted, including two angular structures considered for the first time. The model explains formation of angular magnetic structures in zero field in GdMn2(Ge1-xSix)2 system by taking into account magnetic anisotropy of Mn sublattices with a positive anisotropy constant K1 and negative K2.

AB - Structure and magnetic properties of layered GdMn2(Ge1-xSix)2 (0 ≤ x ≤ 1) compounds were studied. All the compounds crystallize in the tetragonal ThCr2Si2-type structure. It was shown by magnetization measurements at low temperature on quasi-single crystals that, with increasing Si concentration, the easy magnetization direction reorients from the c-axis to the basal plane. The spin reorientation occurs via an angular phase. A model of three magnetic sublattices coupled by negative intersublattice exchange interactions was used to describe the field dependences of the magnetization. For GdMn2Ge2 and GdMn2(Ge0.9Si0.1)2 in the fields applied along the c-axis, seven different magnetic structures were predicted, including two angular structures considered for the first time. The model explains formation of angular magnetic structures in zero field in GdMn2(Ge1-xSix)2 system by taking into account magnetic anisotropy of Mn sublattices with a positive anisotropy constant K1 and negative K2.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85195569258

U2 - 10.1016/j.jallcom.2024.175140

DO - 10.1016/j.jallcom.2024.175140

M3 - Article

VL - 1000

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

M1 - 175140

ER -