Publication
Physical Review B
Paper

Critical behavior of the principal magnetoelectric susceptibilities of GdAlO3

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Abstract

The three independent magnetoelectric susceptibilities of GdAlO3 have been measured in the critical region 6×10-5<TTN<1×10-2. For all three elements, we find power-law behavior with the same critical exponent =0.310.01. Although Gd3+ is an S-state ion and the dominant interaction is isotropic Heisenberg exchange, this exponent is Ising-like. This is interpreted as being due to the strong uniaxial character of the magnetic order. Our results are compared with those for other magnetoelectric materials. © 1977 The American Physical Society.

Date

01 Aug 1977

Publication

Physical Review B

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