✦ LIBER ✦

Lanthanide hexaborides. I. Heat capacities and some thermophysical properties of LaB 6, NdB6 , and GdB 6at temperatures from 5 K to 350 K

✍ Scribed by E.F. Westrum; Jr; J.T.S. Andrews; B.H. Justice; D.A. Johnson

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 120 KB
Volume: 34
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.2001.0897

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✦ Synopsis

Heat-capacity measurements made on zone-refined rods of LaB 6 , NdB 6 , and GdB 6 revealed no anomalies in diamagnetic LaB 6 , but paramagnetic NdB 6 showed a cooperative λ-type transition associated with antiferromagnetic ordering near T /K = (8.4 ± 0.2) with trs S o /R = (1.39 ± 0.06) and a GdB 6 a similar appearing λ-transition at T /K = (15.7 ± 0.3) and trs S o /R = (2.08 ± 0.04). The heat capacity (C p /R), entropy {S o (T ) -S o (0)/R}, and Gibbs energy {G o (T ) -H o (0)}/RT for LaB 6 are (11.66 ± 0.03), (9.999 ± 0.03), and (4.376 ± 0.03

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