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Suppression of the $γ-α$ structural phase transition in $Ce_{0.8} La_{0.1} Th_{0.1}$ by large magnetic fields

F. Drymiotis·J. Singleton·N. Harrison·L. Balicas·A. Bangura·C. H. Mielke·Z. Fisk·A. Migliori·J. L. Smith·J. C. Lashley
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Abstract

The $γ-α$ transition in Ce$_{0.8}$La$_{0.1}$Th$_{0.1}$ is measured as a function of applied magnetic field using both resistivity and magnetization. The $γ- α$ transition temperature decreases with increasing magnetic field, reaching zero temperature at around 56 T. The magnetic-field dependence of the transition temperature may be fitted using a model that invokes the field and temperature dependence of the entropy of the $4f$-electron moments of the $γ$ phase, suggesting that the volume collapse in Ce and its alloys is primarily driven by entropic considerations.

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F. Drymiotis, J. Singleton, N. Harrison, L. Balicas, A. Bangura, C. H. Mielke, Z. Fisk, A. Migliori, J. L. Smith, J. C. Lashley. 2004-06-02. Suppression of the $γ-α$ structural phase transition in $Ce_{0.8} La_{0.1} Th_{0.1}$ by large magnetic fields. https://doi.org/10.1088/0953-8984%2F17%2F7%2Fl01

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