Influence of Sintering Temperature on Low-field Spin-polarized Tunneling Magnetoresistance of La0.7Ca0.3MnO3

Pham Thanh Phong, Do Hung Manh, Le Van Hong, Nguyen Xuan Phuc, Nguyen Van Khiem, Vu Van Hung
Author affiliations

Authors

  • Pham Thanh Phong Ninh Hoa Department of Education and Training, Khanh Hoa, Vietnam
  • Do Hung Manh Institute of Materials Science, VAST
  • Le Van Hong Institute of Materials Science, VAST
  • Nguyen Xuan Phuc Institute of Materials Science, VAST
  • Nguyen Van Khiem Department of Natural Sciences, Hong Duc University, 307 Le Lai Str. Thanh Hoa City, Vietnam
  • Vu Van Hung Department of Natural Sciences, Hong Duc University, 307 Le Lai Str. Thanh Hoa City, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/18/1/10690

Abstract

In this study we report the effect of sintering temperature on the low field magnetoresistance (LFMR) of La0.7Ca0.3MnO3 manganite synthesized through sol-gel technique. The La0.7Ca0.3MnO3 has been sintered at 600°C, 700°C, 800°C, 900°C and 1200°C. The crystallite as well as particle size also show strong dependence on the sintering temperature. While the ferromagnetic – paramagnetic (FM-PM) transition temperature remains almost constant, the metal – insulation transition temperature drop gradual and the low field magnetoresistance (LFMR) increase with a decrease in grain size. We have analyzed our data based on the spin – polarized transport of conduction electrons at the grain boundaries.

Downloads

Metrics

PDF views
157

Downloads

Published

18-07-2008

How to Cite

[1]
P. T. Phong, D. H. Manh, L. V. Hong, N. X. Phuc, N. V. Khiem, and V. V. Hung, “/sub>”;, Comm. Phys., vol. 18, no. 1, pp. 48–57, Jul. 2008.

Issue

Vol. 18 No. 1 (2008)

Section

Papers

License

Authors who publish with CIP agree with the following terms:
  1. The manuscript is not under consideration for publication elsewhere. When a manuscript is accepted for publication, the author agrees to automatic transfer of the copyright to the editorial office.
  2. The manuscript should not be published elsewhere in any language without the consent of the copyright holders. Authors have the right to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal’s published version of their work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are encouraged to post their work online (e.g., in institutional repositories or on their websites) prior to or during the submission process, as it can lead to productive exchanges or/and greater number of citation to the to-be-published work (See The Effect of Open Access).
Crossref
3
Scopus
Google Scholar
Europe PMC
0
Mariano Romero, Ricardo Faccio, Helena Pardo, Milton A. Tumelero, André A. Pasa, Álvaro W. Mombrú (2015)
Microstructural and magnetotransport studies of novel manganite–sebacic acid nanocomposites prepared at low temperature. Journal of Magnetism and Magnetic Materials, 377, 490.
10.1016/j.jmmm.2014.11.001
K. P. Lim, S. A. Halim, S.K. Chen, M. M. Awang Kechik, S. W. Ng, W. N. W. Wan Jusoh (2018)
Grain Size Effect on Electrical and Magnetotransport Properties of La0.67Ca0.33MnO3 synthesized via Sol-Gel Method. Journal of Physics: Conference Series, 1083, 012059.
10.1088/1742-6596/1083/1/012059
P.V. Jithin, Yugandhar Bitla, Manju Mishra Patidar, V. Ganesan, K.J. Sankaran, Joji Kurian (2023)
Structural, magnetic and electrical transport properties of the sol-gel derived La1-xCaxMnO3 (0≤x≤0.3) nanoparticles. Materials Chemistry and Physics, 301, 127651.
10.1016/j.matchemphys.2023.127651

Most read articles by the same author(s)

1 2 > >>