EFFECTS OF MAGNETIC ANISOTROPY AND EXCHANGE IN TM2FE17

A. N. Pirogov, S. G. Bogdanov, E. V. Rosenfeld, J. G. Park, Y. N. Choi, S. Lee, K. Prokes, N. O. Golosova, I. L. Sashin, N. V. Kudrevatykh, Yu. N. Skryabin, A. P. Vokhmyanin

Результат исследований: Вклад в журналСтатья

Аннотация

Neutron diffraction experiments have been carried out to study the magnetocrystalline anisotropy of two (2b and 2d) Tin sublattices and four (4/, Qg, 12 j, and 12k) Fe sublattices in ferrimagnetic compound Trr^Fei? (space group Рбз/ттс). We determine the temperature dependence of the magnitude and orientation of magnetization for each of the thulium and iron sublattices in the range (10-300) K. A spontaneous rotation (at about 90 K) of the Tin and Fe sublattice magnetizations from the c-axis to the basal plane is accompanied by a drastic change in the magnetization magnitude, signifying a large magnetization anisotropy. Both Tin sublattices exhibit an easy-axis type of the magnetocrystalline anisotropy. The Fe sublattices manifest both the uniaxial and planar anisotropy types. The sublattice formed by Fe atoms at the 4/ position reveals the largest planar anisotropy constant. The Fe atoms at the 12j position show a uniaxial anisotropy. We find that the inelastic neutron scattering spectra measured below and above the spin-reorientation transition are remarkably different.
Язык оригиналаАнглийский
Страницы (с-по)951-963
ЖурналЖурнал экспериментальной и теоретической физики
Том142
Номер выпуска5
СостояниеОпубликовано - 2012

ГРНТИ

  • 29.19.00 Физика твердых тел

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