Hydrogen-induced structural and valence change in CeIrAl

被引：23
作者：
Malik, SK
Raj, P [1 ]
Sathyamoorthy, A
Shashikala, K
Kumar, NH
Menon, L
机构：
[1] Tata Inst Fundamental Res, Mumbai 400005, India
[2] Bhabha Atom Res Ctr, Novel Mat & Struct Chem Div, Mumbai 400005, India
来源：
PHYSICAL REVIEW B | 2001年 / 63卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.63.172418
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The compound CeIrAl crystallizes in the orthorhombic epsilon -TiNiSi-type structure in which the cerium ions are in a mixed-valent state as inferred from its weakly temperature dependent magnetic susceptibility. This compound absorbs hydrogen at ambient temperature to form CeIrAlH2. A structural transformation from orthorhombic to hexagonal structure takes place on hydrogen absorption. Further, the magnetic susceptibility of the hydride exhibits Curie-Weiss behavior, typical of local moment on Ce3+ ions. Thus hydrogen absorption brings about dramatic changes in the structure and the valence state of cerium in CeIrAl.
引用
收藏
页码：1724181 / 1724184
页数：4
相关论文
共 14 条
[1]  
Bieganski Z., 1970, Physica Status Solidi A, V2, pk161, DOI 10.1002/pssa.19700020337
[2]   HYDRIDES FORMED FROM INTERMETALLIC COMPOUNDS OF 2 TRANSITION-METALS - A SPECIAL-CLASS OF TERNARY ALLOYS [J].
BUSCHOW, KHJ ;
BOUTEN, PCP ;
MIEDEMA, AR .
REPORTS ON PROGRESS IN PHYSICS, 1982, 45 (09) :937-1039
[3]   EXCHANGE INTERACTION IN ALLOYS WITH CERIUM IMPURITIES [J].
COQBLIN, B ;
SCHRIEFF.JR .
PHYSICAL REVIEW, 1969, 185 (02) :847-+
[4]  
ELLIS DE, 1985, HDB PHYSICS CHEM ACT, V2, P329
[5]  
Hill H H., 1970, Plutonium 1970 and Other Actinides: Proceedings Part 1 (Nuclear Metallurgy)
[6]   Magnetic and transport studies on RIrAl (R = Y, La, Ce, Pr and Nd) compounds: mixed-valent behaviour of CeIrAl [J].
Kumar, NH ;
Menon, L ;
Rao, CRV ;
Malik, SK ;
Raj, P ;
Sathyamoorthy, A ;
Shashikala, K .
SOLID STATE COMMUNICATIONS, 1999, 109 (05) :345-349
[7]   HYDROGEN INDUCED MAGNETIC-ORDERING IN TH6MN23 [J].
MALIK, SK ;
TAKESHITA, T ;
WALLACE, WE .
SOLID STATE COMMUNICATIONS, 1977, 23 (09) :599-602
[8]   ErFe2-H2 system I.: The interstitial-site occupancy by hydrogen atoms and model predictions [J].
Raj, P ;
Shashikala, K ;
Sathyamoorthy, A ;
Siruguri, V ;
Paranjpe, SK .
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1999, 79 (08) :1185-1194
[9]  
RAJ P, 1994, INDIAN J PURE AP PHY, V32, P548
[10]   The hydriding behaviour of U(Fe1-xNix)Al system (0≤x≤0.75) and magnetic studies on U(Fe1-xNix)AlH0.8 [J].
Raj, P ;
Sathyamoorthy, A ;
Shashikala, K ;
Kumar, NH ;
Rao, CRV ;
Malik, SK .
JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 296 (1-2) :20-26
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