A calorimetric study of the onset of antiferromagnetism in neodymium
H U Astrom; G Benediktsson; H U Astrom; Dept. of Solid State Phys., R. Inst. of Technol., Stockholm, Sweden; G Benediktsson; Dept. of Solid State Phys., R. Inst. of Technol., Stockholm, Sweden
Журнал:
Journal of Physics: Condensed Matter
Дата:
1993-11-29
Аннотация:
The magnetic transitions at T<sub>N</sub> and T<sub>2</sub> in high-purity neodymium have been studied with a high-resolution microcalorimeter. The transition temperatures are T<sub>N</sub>=20.0+or-0.2 K and T<sub>2</sub>=19.2+or-0.2 K. The latent heats associated with the transitions are 0.9+or-0.3 J mol<sup>-1</sup> and 0.3+or-0.1 J mol<sup>-1</sup>, respectively. Small thermal hystereses were also observed at both transitions. The results prove unambiguously that the transitions are of first order.
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