Effects of magnetic anisotropy and exchange in Tm{sub 2}Fe{sub 17}

Journal Article · Wed Nov 14 23:00:00 EST 2012 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S106377611210010X· OSTI ID:22069267

Bogdanov, S G; Rosenfeld, E V ^[1]; Park, J -G ^[2]; Choi, Y N; Lee, Seongsu ^[3]; Prokes, K ^[4]; Golosova, N O; Sashin, I L ^[5]; Kudrevatykh, N V ^[6]; Skryabin, Yu N; Vokhmyanin, A P ^[1]

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1. Russian Academy of Sciences, Institute of Metal Physics, Ural Division (Russian Federation)
2. Seoul National University, FPRD, Department of Physics and Astronomy (Korea, Republic of)
3. Korea Atomic Energy Research Institute, Neutron Science Division HANARO (Korea, Republic of)
4. Helmholtz Centre Berlin for Materials and Energy (Germany)
5. Joint Institute for Nuclear Research (Russian Federation)
6. Ural Federal University, Institute of Physics and Applied Mathematics (Russian Federation)

Neutron diffraction experiments have been carried out to study the magnetocrystalline anisotropy of two (2b and 2d) Tm sublattices and four (4f, 6g, 12j, and 12k) Fe sublattices in ferrimagnetic compound Tm{sub 2}Fe{sub 17} (space group P6{sub 3}/mmc). We have determined 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 Tm 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 Tm 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 4f 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.

• OSTI ID: 22069267
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 5 Vol. 115; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CRYSTAL LATTICES
FERRIMAGNETIC MATERIALS
FERRIMAGNETISM
HCP LATTICES
INELASTIC SCATTERING
INTERMETALLIC COMPOUNDS
IRON
MAGNETIZATION
NEUTRON DIFFRACTION
ORIENTATION
ROTATION
SPIN
TEMPERATURE DEPENDENCE
THULIUM