Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1594837 | Solid State Communications | 2009 | 4 Pages |
Abstract
We observe the exchange bias effect in the low hole doped cobaltite Nd0.88Sr0.12CoO3. Training effect as well as systematic horizontal and vertical shifts of the hysteresis loops as a function of temperature and cooling field indicate the exchange bias effect. Temperature dependence of magnetization exhibits a peak at 28 K and an anomaly around â¼297K below which zero-field cooled and field-cooled magnetizations deviate from each other. Strong frequency dependence in the ac susceptibility measurements indicates the spin freezing process at the low temperature peak which behaves like a spin-glass transition. The signature of exchange bias suggests the spontaneous separation between ferromagnetic (FM) and spin-glass like phases in the compound where FM domains or clusters have a single domain structure.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
M. Patra, S. Majumdar, S. Giri,