POSSIBILITY OF HYDROGEN ORDERING IN RARE-EARTH HYDRIDES

被引：17

作者：

BASHKIN, IO ^{[1
]}

PONYATOVSKII, EG ^{[1
]}

KOST, ME ^{[1
]}

机构：

[1] NS KURNAKOV GEN & INORGAN CHEM INST,MOSCOW,USSR

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1979年 / 91卷 / 02期

关键词：

D O I：

10.1002/pssb.2220910203

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The region of f.c.c. solid solutions of the NdH system is investigated by DTA at temperatures from −140 to 100 °C. A phase transformation is revealed, its temperature depends on composition. On the basis of the shape of the T–C diagram, kinetics of transformation at low temperatures, weak dependence of Tc on pressure, and neutron diffraction data the conclusion is made that the phase transformation is induced by ordering of hydrogen in octahedral sites. The relationship between ordering and the metal‐to‐semiconductor transition is discussed. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA

引用

页码：401 / 405

页数：5

共 15 条

[1] PHASE-TRANSFORMATIONS IN HYDRIDES OF RARE-EARTH-METALS UNDER PRESSURE .1. STRUCTURAL TRANSITION IN NDH2.82 [J].

BASHKIN, IO ;

PONYATOVSKII, EG ;

KOST, ME .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1977, 83 (02) :517-520

[2]

BIEGANSK.Z, 1965, B ACAD POL SCI-CHIM, V13, P227

[3] LOW-TEMPERATURE PHASE-TRANSITIONS IN LANTHANUM AND NEODYMIUM TRIHYDRIDES - SPECIFIC-HEAT MEASUREMENTS [J].

BIEGANSKI, Z ;

DRULIS, M .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 44 (01) :91-96

[4] NEUTRON-DIFFRACTION STUDY OF NONSTOICHIOMETRIC CERIUM HYDRIDE [J].

CHEETHAM, AK ;

FENDER, BEF .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1972, 5 (05) :L35-&

[5]

HANSEN M, 1962, CONSTITUTION BINARY, V1, P217

[6] PROBLEM OF SYMMETRY IN STATISTICAL THERMODYNAMICS OF SUBSTITUTIONAL AND INTERSTITIAL ORDERED SOLID-SOLUTIONS [J].

KHACHATURYAN, AG .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1973, 60 (01) :9-37

[7]

KHACHATURYAN AG, 1974, THEORY PHASE TRANSFO

[8]

LIBOWITZ GG, 1972, BERICH BUNSEN GESELL, V76, P837

[9] TEMPERATURE-DEPENDENT ELECTRONIC TRANSITION IN CERIUM HYDRIDE [J].

LIBOWITZ, GG ;

PACK, JG ;

BINNIE, WP .

PHYSICAL REVIEW B, 1972, 6 (12) :4540-4546

[10] DISSOCIATION PRESSURES IN SYSTEM LAH2-LAH3 250-450 DEGREES [J].

MESSER, CE ;

HUNG, GWH .

JOURNAL OF PHYSICAL CHEMISTRY, 1968, 72 (12) :3958-&

← 1 2 →