Magnetism of Nanoparticle La_{0.7}Ca_{0.3}Mn_{0.7}Fe_{0.3}O_3 under Applied Hydrostatic Pressure

• Authors: V. Kusigerski , M. Perovic , A. Mrakovic , J. Blanusa , M. Mihalik , M. Zentkova , V. Spasojevic
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

75.50.Tt   75.75.-c   81.07.Bc  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 811-812

Dates

published

2010-11

References

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Identifiers

DOI

10.12693/APhysPolA.118.811