Influence of BaTiO3 on Magnetic and Transport Properties of La0.7Sr0.3MnO3-BaTiO3 Nanocomposite

Influence of BaTiO3 on Magnetic and Transport Properties of La0.7Sr0.3MnO3-BaTiO3 Nanocomposite La Sr MnO (LSMO)-BaTiO (BTO) nanocomposites have been synthesized by adding different amounts of BTO 0.7 0.3 3 3 using the sol-gel method. The structural analysis confirms that both phases coexist in the composite samples with the rhombohedral and tetragonal structure for LSMO and BTO, respectively. The magnetization measurement shows a decrease in magnetization with the increase in BTO concentration and a signature of the spin glass-like characteristics of the nanocomposite. The dielectric behavior indicates the existence of the magneto-electric coupling between LSMO and BTO phase. The measurement of transport properties shows that resistivity increases with BTO concentration and metal-insulator (M-I) transition temperature shifts towards lower temperature. The low-temperature (T< 50 K) resistivity behavior of the samples is analyzed by using the Kondo-like transport model. The results show the spin-disordered scattering increases with the increase in the amount of BTO in LSMO phase. The low-field magnetoresistance (LFMR) of the nanocomposite is improved as compared to the pure LSMO. The highest value of LFMR achieved for LSMO-BTO composite at 10 K is 35.5% with a 1 T magnetic field. Keywords Nanocomposite · M-I transition · Kondo-like transport 1 Introduction observed near the Curie temperature. The extrinsic CMR is related to http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Superconductivity and Novel Magnetism Springer Journals

Influence of BaTiO3 on Magnetic and Transport Properties of La0.7Sr0.3MnO3-BaTiO3 Nanocomposite

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Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Physics; Strongly Correlated Systems, Superconductivity; Magnetism, Magnetic Materials; Condensed Matter Physics; Characterization and Evaluation of Materials
ISSN
1557-1939
eISSN
1557-1947
D.O.I.
10.1007/s10948-018-4754-0
Publisher site
See Article on Publisher Site

Abstract

La Sr MnO (LSMO)-BaTiO (BTO) nanocomposites have been synthesized by adding different amounts of BTO 0.7 0.3 3 3 using the sol-gel method. The structural analysis confirms that both phases coexist in the composite samples with the rhombohedral and tetragonal structure for LSMO and BTO, respectively. The magnetization measurement shows a decrease in magnetization with the increase in BTO concentration and a signature of the spin glass-like characteristics of the nanocomposite. The dielectric behavior indicates the existence of the magneto-electric coupling between LSMO and BTO phase. The measurement of transport properties shows that resistivity increases with BTO concentration and metal-insulator (M-I) transition temperature shifts towards lower temperature. The low-temperature (T< 50 K) resistivity behavior of the samples is analyzed by using the Kondo-like transport model. The results show the spin-disordered scattering increases with the increase in the amount of BTO in LSMO phase. The low-field magnetoresistance (LFMR) of the nanocomposite is improved as compared to the pure LSMO. The highest value of LFMR achieved for LSMO-BTO composite at 10 K is 35.5% with a 1 T magnetic field. Keywords Nanocomposite · M-I transition · Kondo-like transport 1 Introduction observed near the Curie temperature. The extrinsic CMR is related to

Journal

Journal of Superconductivity and Novel MagnetismSpringer Journals

Published: Jun 1, 2018

References

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