ЖЭТФ, Том 128,
стр. 1252 (Декабрь 2005)
(Английский перевод - JETP,
Vol. 101, No 6,
доступен on-line на www.springer.com
SPIN REORIENTATION EFFECTS IN GdFe3(BO3)4 INDUCED BY APPLIED FIELD AND TEMPERATURE
Kharlamova S.A., Ovchinnikov S.G., Balaev A.D., Thomas M.F., Lyubutin L.S., Gavriliuk A.G.
Поступила в редакцию: 16 Мая 2005
PACS: 76.80.+y, 75.25.+z, 75.30.Gw, 75.50.Ee, 76.60.Jx
Magnetic properties of GdFe3(BO3)4 single crystals were investigated by the 57Fe-Mossbauer spectroscopy and static magnetic measurements. In the ground state, the GdFe3(BO3)4 crystal is an easy-axis compensated antiferromagnet, but the easy axis of iron moments does not coincide with the crystal C3 axis, deviating from it by about . The spontaneous and field-induced spin reorientation effects were observed and studied in detail. The specific directions of iron magnetic moments were determined for different temperatures and applied fields. Large values of the angle between the Fe3+ magnetic moments and the C3 axis in the easy-axis phase and between Fe3+ moments and the a2 axis in the easy-plane phase reveal the tilted antiferromagnetic structure.