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The puzzle of the $\gamma\to\alpha$ and other phase transitions in cerium

A.V. Nikolaev^ab, A. V. Tsvyashchenko<sup>bc

a</sup> Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow
^b Skobel'tsyn Institute of Nuclear Physics, Lomonosov Moscow State University
^c Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences

Abstract: We discuss recent research on phase transitions in cerium under pressure, including new experiments on the $\gamma\to\alpha$ transition, which indicate that it is a hidden structural phase transition. We also discuss some models of relevance to the field, both theoretical and computational.

Keywords: structural phase transitions, cerium, electronic structure, nuclear (TDPAC) spectroscopy.

PACS: 61.50.Ks, 64.70.K-, 71.10.-w, 71.27.+a, 71.70.Jp, 76.80.+y, 81.30.-t

Received: May 23, 2011
Revised: March 26, 2012
Accepted: May 11, 2012

DOI: 10.3367/UFNr.0182.201207b.0701

 English version: Physics–Uspekhi, 2012, 55:7, 657–680

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