/ E. A. Popova [et al.]> // Phys. Rev. B. - 2007. -
Vol. 75,
Is. 22. - Ст. 224413,
DOI 10.1103/PhysRevB.75.224413. - Cited References: 22
. - ISSN 1098-0121
РУБ Physics, Condensed Matter
Аннотация: We have studied the thermodynamic properties of single-crystalline TbFe3(BO3)(4). Magnetization measurements have been carried out as a function of magnetic field (up to 50 T) and temperature up to 350 K with the magnetic field both parallel and perpendicular to the trigonal c axis of the crystal. The specific heat has been measured in the temperature range 2-300 K with a magnetic field up to 9 T applied parallel to the c axis. The data indicate a structural phase transition at 192 K and antiferromagnetic spin ordering at T-N approximate to 40 K. A Schottky anomaly is present in the specific-heat data around 20 K, arising due to two low-lying energy levels of the Tb3+ ions being split by f-d coupling. Below T-N, magnetic fields parallel to the c axis drive a spin-flop phase transition, which is associated with a large magnetization jump. The highly anisotropic character of the magnetic susceptibility is ascribed mainly to the Ising-like behavior of the Tb3+ ions in the trigonal crystal field. We describe our results in the framework of a unified approach which is based on mean-field approximation and crystal-field calculations.
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Держатели документа: Moscow MV Lomonosov State Univ, Fac Phys, Low Temp Phys Dept, Moscow 119992, Russia
Bryansk State Tech Univ, Bryansk 241035, Russia
RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
IFW Dresden, Leibniz Inst Solid State & Mat Res, D-01171 Dresden, Germany
ИФ СО РАН
Low Temperature Physics Department, Physics Faculty, Moscow State University, 119992 Moscow, Russian Federation
Bryansk State Technical University, 241035 Bryansk, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, 660036 Krasnoyarsk, Russian Federation
Leibniz-Institute for Solid State and Materials Research, IFW Dresden, 01171 Dresden, Germany
Доп.точки доступа: Popova, E. A.; Volkov, D. V.; Vasiliev, A. N.; Demidov, A. A.; Kolmakova, N. P.; Gudim, I. A.; Гудим, Ирина Анатольевна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Tristan, N.; Skourski, Y.; Buchner, B.; Hess, C.; Klingeler, R.