Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1529648 | Materials Science and Engineering: B | 2011 | 4 Pages |
Abstract
We present the results of first-principles electronic structure calculations of Sn0.96Cr0.04O2 alloys, simulating chromium in rutile tin dioxide as an impurity in a diluted magnetic semiconductor configuration. A magnetic bistability has been observed, with the occurrence of a low-spin state with magnetic moment m = 0μB in addition to the high-spin ground state with m = 2μB. When an oxygen vacancy is included, as one of the nearest-neighbors to Cr impurity, a remarkable change is observed in the magnetic metastability. The energy barrier for the crossover from the low-spin to high-spin is lowered by 75%. These findings suggest that these materials may be used in applications which require different magnetized states.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Pablo D. Borges, Lui'sa M.R. Scolfaro, Horácio W. Leite Alves, Eronides F. Jr., Lucy V.C. Assali,