Magnetic and dielectric properties of rare earth substituted Ni0.5Zn0.5Fe1.95R0.05O4 (R = Pr, Sm and La) ferrite nanoparticles
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Magnetic and dielectric properties of rare earth substituted Ni0.5Zn0.5Fe1.95R0.05O4 (R = Pr, Sm and La) ferrite nanoparticles
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| Creator |
Singh, Rakesh Kumar
Shah, Jyoti Kotnala, R. K. |
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| Subject |
Materials Science
Applied Physics/Condensed Matter |
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| Description |
Ni0.5Zn0.5Fe1.95R0.05O4 nanoparticles (R = Pr, Sm and La) have been synthesized by citrate precursor method and annealed at 450 degrees C All the samples were found to be in single phase. The lattice constants and crystallite size decreases with rare earth substitution (25 nm, 23 nm, 11 nm and 9 nm) due to strain produced in spinet lattice. Saturation magnetization and coercivity of ferrite significantly decreases (50.69 emu/g, 32.17 emu/g. 30.21 emu/g and 34.65 emu/g respectively) with rare earth substitution. The substitution of large ionic radius rare earth ions in Ni0.5Zn0.5Fe2O4 results in distortion and induces a softening of magnetic exchange interaction. The dielectric measurements at higher frequency range (100 Hz - 1 MHz) shows that these substituted ferrites exhibits low dielectric loss, which is suitable for high frequency applications.
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| Publisher |
Elsevier
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| Date |
2016-08
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2272/1/Magnetic%20and.pdf
Singh, Rakesh Kumar and Shah, Jyoti and Kotnala, R. K. (2016) Magnetic and dielectric properties of rare earth substituted Ni0.5Zn0.5Fe1.95R0.05O4 (R = Pr, Sm and La) ferrite nanoparticles. Materials Science and Engineering: B, 210. pp. 64-69. ISSN 0921-5107 |
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| Relation |
http://npl.csircentral.net/2272/
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