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Title: Alternate current magnetic property characterization of nonstoichiometric zinc ferrite nanocrystals for inductor fabrication via a solution based process

Abstract

We investigate the ac magnetic behavior of solution processable, non-stoichiometric zinc ferrite nanocrystals with a series of sizes and zinc concentrations. Nearly monodisperse Zn{sub x}Fe{sub 3−x}O{sub 4} nanocrystals (x = 0–0.25) with an average size ranging from 7.4 nm to 13.8 nm are synthesized by using a solvothermal method. All the nanocrystals are in a superparamagnetic state at 300 K, which is confirmed by Superconductive Quantum Interference Device magnetometry. Due to the doping of non-magnetic Zn{sup 2+} into A site of ferrite, the saturation magnetization of nanocrystals increases as the size and Zn concentration increases. The ac magnetic permeability measurements at radio frequencies reveal that the real part of the magnetic permeability of similarly sized ferrite nanocrystals can be enhanced by almost twofold as the Zn{sup 2+} doping level increases from 0 to 0.25. The integration of 12.3 nm Zn{sub 0.25}Fe{sub 2.75}O{sub 4} nanocrystals into a toroidal inductor and a solenoid inductor prepared via a simple solution cast process yields a higher quality factors than air core inductors with the same geometries up to 5 MHz and 9 MHz, respectively, which is in the regime of the switching frequencies for the advanced integrated power converters.

Authors:
 [1]; ;  [2];  [3];  [4];  [3];  [3];  [5];  [6];  [1];  [5];  [5];  [1];  [5]
  1. Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
  2. Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
  3. Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
  4. (Korea, Republic of)
  5. (United States)
  6. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
Publication Date:
OSTI Identifier:
22596902
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 119; Journal Issue: 11; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AIR; CONCENTRATION RATIO; FABRICATION; FERRITE; FERRITES; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; MHZ RANGE 01-100; NANOSTRUCTURES; QUALITY FACTOR; RADIOWAVE RADIATION; SOLENOIDS; SUPERPARAMAGNETISM; ZINC; ZINC IONS

Citation Formats

Yun, Hongseok, Kim, Jungkwun, Allen, Mark G., Paik, Taejong, School of Integrative Engineering, Chung-Ang University, Seoul 06974, Meng, Lingyao, Jo, Pil Sung, Complex Assemblies of Soft Matter, CNRS-SOLVAY-PENN UMI 3254, Bristol, Pennsylvania 19007-3624, Kikkawa, James M., Kagan, Cherie R., Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, Murray, Christopher B., E-mail: cbmurray@sas.upenn.edu, and Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104. Alternate current magnetic property characterization of nonstoichiometric zinc ferrite nanocrystals for inductor fabrication via a solution based process. United States: N. p., 2016. Web. doi:10.1063/1.4942865.
Yun, Hongseok, Kim, Jungkwun, Allen, Mark G., Paik, Taejong, School of Integrative Engineering, Chung-Ang University, Seoul 06974, Meng, Lingyao, Jo, Pil Sung, Complex Assemblies of Soft Matter, CNRS-SOLVAY-PENN UMI 3254, Bristol, Pennsylvania 19007-3624, Kikkawa, James M., Kagan, Cherie R., Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, Murray, Christopher B., E-mail: cbmurray@sas.upenn.edu, & Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104. Alternate current magnetic property characterization of nonstoichiometric zinc ferrite nanocrystals for inductor fabrication via a solution based process. United States. doi:10.1063/1.4942865.
Yun, Hongseok, Kim, Jungkwun, Allen, Mark G., Paik, Taejong, School of Integrative Engineering, Chung-Ang University, Seoul 06974, Meng, Lingyao, Jo, Pil Sung, Complex Assemblies of Soft Matter, CNRS-SOLVAY-PENN UMI 3254, Bristol, Pennsylvania 19007-3624, Kikkawa, James M., Kagan, Cherie R., Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, Murray, Christopher B., E-mail: cbmurray@sas.upenn.edu, and Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104. Mon . "Alternate current magnetic property characterization of nonstoichiometric zinc ferrite nanocrystals for inductor fabrication via a solution based process". United States. doi:10.1063/1.4942865.
@article{osti_22596902,
title = {Alternate current magnetic property characterization of nonstoichiometric zinc ferrite nanocrystals for inductor fabrication via a solution based process},
author = {Yun, Hongseok and Kim, Jungkwun and Allen, Mark G. and Paik, Taejong and School of Integrative Engineering, Chung-Ang University, Seoul 06974 and Meng, Lingyao and Jo, Pil Sung and Complex Assemblies of Soft Matter, CNRS-SOLVAY-PENN UMI 3254, Bristol, Pennsylvania 19007-3624 and Kikkawa, James M. and Kagan, Cherie R. and Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 and Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 and Murray, Christopher B., E-mail: cbmurray@sas.upenn.edu and Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104},
abstractNote = {We investigate the ac magnetic behavior of solution processable, non-stoichiometric zinc ferrite nanocrystals with a series of sizes and zinc concentrations. Nearly monodisperse Zn{sub x}Fe{sub 3−x}O{sub 4} nanocrystals (x = 0–0.25) with an average size ranging from 7.4 nm to 13.8 nm are synthesized by using a solvothermal method. All the nanocrystals are in a superparamagnetic state at 300 K, which is confirmed by Superconductive Quantum Interference Device magnetometry. Due to the doping of non-magnetic Zn{sup 2+} into A site of ferrite, the saturation magnetization of nanocrystals increases as the size and Zn concentration increases. The ac magnetic permeability measurements at radio frequencies reveal that the real part of the magnetic permeability of similarly sized ferrite nanocrystals can be enhanced by almost twofold as the Zn{sup 2+} doping level increases from 0 to 0.25. The integration of 12.3 nm Zn{sub 0.25}Fe{sub 2.75}O{sub 4} nanocrystals into a toroidal inductor and a solenoid inductor prepared via a simple solution cast process yields a higher quality factors than air core inductors with the same geometries up to 5 MHz and 9 MHz, respectively, which is in the regime of the switching frequencies for the advanced integrated power converters.},
doi = {10.1063/1.4942865},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 119,
place = {United States},
year = {2016},
month = {3}
}