Low-temperature specific heat of GdCu, GdCu2, and GdCu5 antiferromagnets
- 41 Downloads
It is found that the expansion of the low-temperature specific heat C p of the antiferromagnetic metallic compounds GdCu, GdCu2, and GdCu5 contains a large term that is proportional to the square of temperature (δT 2). The value of δ is inversely proportional to the Néel temperature T N. The GdCu2 compound exhibits a strong dependence of the specific heat anomaly at T N on an external magnetic field. The results obtained are compared with the data for other metal antiferromagnets, for example, the CuMnSb Heusler alloy.
KeywordsMagnetic Susceptibility Unusual Behavior Matter Mater Magnetic Sublattice Root Temperature
- 1.Kourov, N.I. and Tsiovkin, Yu.N., Fiz. Nizk. Temp. (Kiev), 1989, vol. 15, p. 598.Google Scholar
- 2.Podgornykh, S.M., Kourov, N.I., and Tsiovkin, Yu.N., Fiz. Nizk. Temp. (Kiev), 1993, vol. 19, p. 883.Google Scholar
- 3.Bouvier, M., Lethuillier, P., and Schmitt, D., Phys. Rev. B: Condens. Matter Mater. Phys., 1991, vol. 43, 13 137.Google Scholar
- 6.Jeong, T. et al., Phys. Rev. B: Condens. Matter Mater. Phys., 2005, vol. 71, 184 103.Google Scholar