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Field-induced spin-reorientation transitions in GdBa2Cu3O7−δ single crystal

✍ Scribed by V.P. Djakonov; E.E. Zubov; L.P. Kozeeva; G.G. Levchenko; V.I. Makrovich; A.D. Pavlyuk; I.M. Fita

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
270 KB
Volume
178
Category
Article
ISSN
0921-4534

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✦ Synopsis

The measurements of temperature and field dependences of the susceptibility for GdBa2Cu3OT_6 single crystals (ci>~ 0.6, tetragonal phase) are used to construct the H-T phase diagram containing the spin-flop (SF) phase at the field orientation along the easy axis. A sequence of AFM-SF, SF-FM phase transitions is described by using the spin-Hamiltonian within the model of twosublattice Heisenberg antiferromagnet (AFM) with the anisotropic exchange. The exchange parameter in the (ab) plane as well as the intra-and inter-sublattice anisotropy constants are determined.

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