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Abstracts
Nanoparticle La_{0.7}Ca_{0.3}Mn_{0.7}Fe_{0.3}O_3 with the average particle size of 10 nm was mechanochemically synthesized in the single-step procedure. Temperature and field dependences of magnetization were recorded under both ambient and applied hydrostatic pressure up to 0.47 GPa. At ambient pressure, two magnetic transition points were observed: one of the spin-glass like type at the temperature T_{f} ≈ 34 K, and ferro-to-paramagnet transition at T_{C} ≈ 51 K. Under the applied pressure magnetic parameters gradually changed: (i) both T_{C} and T_{f} were lowered with the increase in pressure; (ii) both high field magnetization M_{5T} and remanent magnetization M_{Rem} decreased with pressure; (iii) coercivity H_{C} increased with pressure. The obtained results show that magnetism of a nanoparticle system with high degree of intrinsic disorder diminishes with the applied pressure that is in compliance with the effect of the increased cationic disorder ("internal pressure") in bulk manganites.
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Journal
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Volume
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Pages
811-812
Physical description
Dates
published
2010-11
Contributors
author
- Condensed Matter Physics Laboratory, Vinca Institute, University of Belgrade, POB 522, 11001 Belgrade, Serbia
author
- Condensed Matter Physics Laboratory, Vinca Institute, University of Belgrade, POB 522, 11001 Belgrade, Serbia
author
- Condensed Matter Physics Laboratory, Vinca Institute, University of Belgrade, POB 522, 11001 Belgrade, Serbia
author
- Condensed Matter Physics Laboratory, Vinca Institute, University of Belgrade, POB 522, 11001 Belgrade, Serbia
author
- Institute of Experimental Physics, Slovak Academy of Sciences, 04001 Kosice, Slovak Republic
author
- Institute of Experimental Physics, Slovak Academy of Sciences, 04001 Kosice, Slovak Republic
author
- Condensed Matter Physics Laboratory, Vinca Institute, University of Belgrade, POB 522, 11001 Belgrade, Serbia
References
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- 2. V. Markovich, I. Fita, D. Mogilyansky, J. Phys, Condens. Matter 19, 346210 (2007)
- 3. J. Kamarad, Z. Machatova, Z. Arnold, Rev. Sci. Instrum. 75, 5022 (2004)
- 4. V. Kusigerski, D. Markovic, V. Spasojevic, M. Tadic, M. Zentkova, M. Mihalik, J. Nanopart. Res. 12, 1299 (2010)
- 5. L.M. Rodriguez-Martinez, J.P. Attfield, Phys. Rev. B 54, R15622 (1996)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n5040kz