Vaidya, U. V. ; Rakhecha, V. C. ; Sumithra, S. ; Ramakrishnan, S. ; Grover, A. K. (2007) Field and sample history dependence of the compensation temperature in Sm0.97Gd0.03Al2 Journal of Magnetism and Magnetic Materials, 310 (2). pp. 1761-1763. ISSN 0304-8853
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03048...
Related URL: http://dx.doi.org/10.1016/j.jmmm.2006.10.586
Abstract
We present magnetization data on three polycrystalline specimens of Sm0.97Gd0.03Al2: (1) as-cast (grainy texture), (2) powder, and (3) re-melted fast-quenched (plate). The data are presented for nominally zero- (ZFC) and high-field-cooling (HFC) histories. A zero cross-over in magnetization curve at some temperature T=T0 was seen in ZFC data on grainy and powder samples, but not in the plate sample. At fields surpassing magnetocrystalline anisotropy, a 4f magnetic moment flip was still evidenced by HFC data in all samples at a compensation temperature Tcomp, which must necessarily be treated as distinct from T0 (T0 may not even exist). Proper understanding of Tcomp should take account of thermomagnetic history effects.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Sm1-xGdxAl2; Zero-magnetization; Compensation Temperature; History Effects |
| ID Code: | 14463 |
| Deposited On: | 12 Nov 2010 14:14 |
| Last Modified: | 02 Jun 2011 05:01 |
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