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Anomalous thermal expansion of single-crystalline UGe2

✍ Scribed by G. Oomi; K. Nishimura; Y. Ōnuki; S.W. Yun

Book ID
103938942
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
182 KB
Volume
186-188
Category
Article
ISSN
0921-4526

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✦ Synopsis

The linear thermal expansion coefficients a of single-crystalline UGe 2 have been measured in the temperature range 6 K < T < 300 K. It is found that a exhibits a large anisotropy in the temperature dependence and a discontinuous change near 50 K (= Tc), which corresponds to ferromagnetic order. The volume of UGe 2 increases with decreasing temperature below To. The magnitude of spontaneous volume magnetostriction is about 1.2 × 10 3 at 0 K.

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✍ M.R. Ibarra; O. Moze; E.W. Lee; J.S. Abell 📂 Article 📅 1988 🏛 Elsevier Science ⚖ 184 KB

Thermal expansion and magnetisation measurements have been performed on a single crystal of HoA12 between 4 and 300 K. A sharp spontaneous volume anomaly has been observed at the spin re-orientation temperature where the easy direction of magnetisation changes from [101] to [010]. A model incorporat