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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2005, Volume 81, Issue 4, Pages 203–206
(Mi jetpl1678)
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This article is cited in 17 scientific papers (total in 17 papers)
CONDENSED MATTER
Thermoelectric study of the phase transitions in cerium at ultrahigh pressures from $0$ to $20$ GPa
S. V. Ovsyannikov, V. V. Shchennikov, B. N. Goshchitskii Institute of Metal Physics, Ural Division of the Russian Academy of Sciences
Abstract:
The pressure dependences of the thermoelectric power $S$ of Ce samples were measured at pressures $P$ from $0$ to $20$ GPa in a synthetic diamond cell. The dependence of $S$ on $P$ was found to be nonmonotonic both in the region of transitions from the fcc ($\gamma$) phase to the modified fcc ($\alpha$) phase followed by the transition to the body-centered monoclinic ($\alpha''$) and the tetragonal ($\varepsilon$) phases at pressures of about $1$, $5$–$6$, and $12$–$15$ GPa, respectively, and in the stability region of these phases. The thermoelectric power sign was found to be positive for all high-pressure Ce phases. The found $S$ ($P$) dependence was compared with the published computational data on the electronic structure of the cerium phases. Cerium was taken as an example to demonstrate the advantage of the thermoelectric studies over other methods of investigation of phase transitions.
Received: 29.12.2004 Revised: 12.01.2005
Citation:
S. V. Ovsyannikov, V. V. Shchennikov, B. N. Goshchitskii, “Thermoelectric study of the phase transitions in cerium at ultrahigh pressures from $0$ to $20$ GPa”, Pis'ma v Zh. Èksper. Teoret. Fiz., 81:4 (2005), 203–206; JETP Letters, 81:4 (2005), 167–170
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https://www.mathnet.ru/eng/jetpl1678 https://www.mathnet.ru/eng/jetpl/v81/i4/p203
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Abstract page: | 183 | Full-text PDF : | 49 | References: | 24 |
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