Occurrence of Ferromagnetic Behavior in ZrO2 by Ni Substitution Beyond x = 0.01.
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| Title: | Occurrence of Ferromagnetic Behavior in ZrO2 by Ni Substitution Beyond x = 0.01. |
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| Authors: | Pattanaik, Shreenu1 (AUTHOR), Mishra, Dilip Kumar1 (AUTHOR) dilipiuac@gmail.com, Martha, Satyabadi2 (AUTHOR), Padhy, Geetikamayee3 (AUTHOR), Pradhan, Siddhartha Kumar3 (AUTHOR), Sakthivel, Ramasamy3 (AUTHOR), Sarangi, Sachindra Nath4 (AUTHOR) |
| Source: | Journal of Superconductivity & Novel Magnetism. May2020, Vol. 33 Issue 5, p1463-1471. 9p. |
| Subjects: | Ferromagnetic materials, Diamagnetic materials, Antiferromagnetism, Magnetization, Zirconium compounds, Diamagnetism |
| 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 15571939 |
| DOI: | 10.1007/s10948-019-05346-8 |
