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- Title
Occurrence of Ferromagnetic Behavior in ZrO2 by Ni Substitution Beyond x = 0.01.
- Authors
Pattanaik, Shreenu; Mishra, Dilip Kumar; Martha, Satyabadi; Padhy, Geetikamayee; Pradhan, Siddhartha Kumar; Sakthivel, Ramasamy; Sarangi, Sachindra Nath
- Abstract
A series of Zr1-xNixO2 nanocrystalline powders were synthesized by chemical route and then calcined at 750 °C for 5 h. A mixed phase of monoclinic and tetragonal phase of ZrO2 has been observed in XRD patterns and Raman studies. The tetragonal phase of ZrO2 increases up to a Ni concentration of x = 0.025 and thereafter suppression of the tetragonal phase is observed with the increase in monoclinic phase of ZrO2. At lower concentration of Ni of x = 0.01, the material manifests with diamagnetic property and then a diamagnetic to ferromagnetic transition is established at above than x = 0.01. The saturation magnetization increases with increase in Ni concentration up to x = 0.025 and then decreases for Ni concentration of x = 0.03 in Ni substituted ZrO2. The sudden fall in saturation magnetization in Zr0.97Ni0.03O2 arises due to the superexchange interactions between two neighboring Ni2+ ions which lead to antiferromagnetism in the material and suppress the ferromagnetic ordering.
- Subjects
FERROMAGNETIC materials; DIAMAGNETIC materials; ANTIFERROMAGNETISM; MAGNETIZATION; ZIRCONIUM compounds; DIAMAGNETISM
- Publication
Journal of Superconductivity & Novel Magnetism, 2020, Vol 33, Issue 5, p1463
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-019-05346-8