Lahiri, Debdutta ; Khalid, S. ; Modak, P. ; Raychaudhuri, Pratap ; Dhar, S. K. ; Sharma, Surinder M. (2010) Understanding the role of structural disorder on spin polarization in CeMnNi4 using XAFS Physical Review B: Condensed Matter and Materials Physics, 82 (13). 134424_1-134424_6. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v82/i13/e134424
Related URL: http://dx.doi.org/10.1103/PhysRevB.82.134424
Abstract
The role of disorder on ferromagnetism has generally been detrimental. We show how Mn-Ni antisite disorder enhances polarization in CeMnNi4. The disorder is determined to be 6% by X-ray absorption fine structure. The electronic structure of pure CeMnNi4 is pseudo-half-metallic. Site exchange alters the near neighbor bond parameters and modifies the density of states favorably, increasing the polarization (obtained by first-principles calculations) from 13 to 47% (experimental ~66%).
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 48211 |
| Deposited On: | 14 Jul 2011 08:33 |
| Last Modified: | 14 Jul 2011 08:33 |
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