Malik, S. K. ; Raj, P. ; Sathyamoorthy, A. ; Shashikala, K. ; Kumar, N. Harish ; Menon , Latika (2001) Hydrogen-induced structural and valence change in CeIrAl Physical Review B, 63 (17). 172418_1-172418_4. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v63/i17/e172418
Related URL: http://dx.doi.org/10.1103/PhysRevB.63.172418
Abstract
The compound CeIrAl crystallizes in the orthorhombic ε-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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 23268 |
| Deposited On: | 25 Nov 2010 09:32 |
| Last Modified: | 06 Jun 2011 11:36 |
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