A NEW ALLOTROPIC FORM OF CERIUM DUE TO ITS TRANSITION UNDER PRESSURE TO TETRAVALENT STATE

被引：79

作者：

FRANCESCHI, E

OLCESE, GL

机构：

[1] Istituto di Chimica fisica, Università di Genova, Genova

来源：

PHYSICAL REVIEW LETTERS | 1969年 / 22卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.22.1299

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An x-ray structural analysis on cerium under pressure was made in order to investigate its valence behavior in the metallic state. A new form, α′-Ce, always fcc but strongly collapsed, was found to exist at pressures higher than 50 kbar. It was deduced that Ce is tetravalent in the α′ form. The atomic radius of CeIV was calculated, and the probable values of the valency in γ-Ce and α-Ce are also estimated. © 1969 The American Physical Society.

引用

页码：1299 / +

页数：1

共 8 条

[1]

COQBLIN B, 1967, THESIS FS PARIS

[2]

Gschneidner Jr. K. A., 1961, RARE EARTH ALLOYS

[3] EFFECTS OF ALLOYING ADDITIONS ON GAMMA REVERSIBLE ALPHA TRANSFORMATION OF CERIUM .1. PURE CERIUM [J].