Tuning of multi-magnetic phase and exchange bias effect by antisite disorder in Ca-doped La2CoMnO6 double perovskites
- Authors
- Sahoo, RC[Sahoo, R. C.]; Das, S[Das, Sananda]; Daw, D[Daw, Debottam]; Singh, R[Singh, Ripandeep]; Das, A[Das, A.]; Nath, TK[Nath, T. K.]
- Issue Date
- May-2021
- Publisher
- IOP PUBLISHING LTD
- Keywords
- exchange bias; multiple magnetic phases; antisite disorder; magnetism; double perovskites
- Citation
- JOURNAL OF PHYSICS-CONDENSED MATTER, v.33, no.21
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICS-CONDENSED MATTER
- Volume
- 33
- Number
- 21
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/942
- DOI
- 10.1088/1361-648X/abead0
- ISSN
- 0953-8984
- Abstract
- The exchange bias effect at the magnetic interfaces and multi-magnetic phases strongly depends on the antisite disorder (ASD) driven spin configuration in the double perovskite systems. The percentage of ASD in double perovskites is extensively accepted as a key for designing diverse new nanospintronics with tailored functionalities. In this regards, we have investigated such ASD driven phenomena in Ca2+ doped bulk and polycrystalline La2-xCa xCoMnO6 (0 <= x <= 1) series of samples. The structural and Raman studies provide evidence of an increase in the disorder due to the increment of Ca concentration in the parent compound (x = 0). The enhancement of disorder in the doped system induces various magnetic orderings, magnetic frustration and cluster glass-like behavior, which have been confirmed from AC and DC magnetic studies and neutron diffraction studies. As a result, significantly large exchange bias effects, namely zero-field cooled (spontaneous) and field-cooled (conventional) exchange bias, are found. These results reveal the tuning of ASD by doping, which plays an active role in the spin configuration at the magnetic interfaces.
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Collections - Graduate School > Energy Science > 1. Journal Articles
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