| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1612660 | Journal of Alloys and Compounds | 2014 | 4 Pages |
Abstract
MnBi nanoparticles with size in the range 100-300Â nm were fabricated from a mixture of Bi2O3 and Mn in the presence of Ca as reducing element by a mechanochemical process. Heat treatment of as-milled powder and subsequent washing yielded nanoparticles with composite morphology of MnBi/Bi. Nanoparticles were crystallographically anisotropic and displayed high remanence ratio (Mr/Ms) of 0.94 and high coercivity (Hc) of 16.3Â kOe at room temperature. The spin reorientation temperature of the MnBi nanoparticles was found to be at 119Â K showing an increase by 10Â K as compared to the bulk sample.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
N.V. Rama Rao, A.M. Gabay, X. Hu, G.C. Hadjipanayis,