Griffiths-Like Phase in Nanocrystalline Manganite La_{0.85}Ca_{0.15}MnO_3

• Authors: M. Pękała , K. Pękała , J. Szydłowska , V. Drozd
• Languages of publication: EN

Abstracts

EN

The ferromagnetic Curie temperatures T_{C} derived from a temperature derivative of AC susceptibility are equal to 106 K and 161 K for the nanocrystalline and polycrystalline manganites, respectively. The magnetic susceptibility and electron spin resonance confirm that the Griffiths-like phase exists above the Curie temperature in paramagnetic matrix of the nanocrystalline manganite. An analysis of electron spin resonance spectra allows to detect the upper temperature limit for an existence of Griffiths-like phase at temperature T_{GI}=290 K, which is somewhat higher than the T_{G} of the magnetic susceptibility.

Keywords

EN

75.50.Tt; 75.40.Cx; 76.30.-v

Discipline

• 75.50.Tt: Fine-particle systems; nanocrystalline materials
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 774-776

Dates

published

2017-04

Contributors

author

M. Pękała

• Chemistry Department, Warsaw University, Warsaw, Poland

author

K. Pękała

• Physics Department, Warsaw University of Technology, Warsaw, Poland

author

J. Szydłowska

• Chemistry Department, Warsaw University, Warsaw, Poland

author

V. Drozd

• Florida International University, Miami, FL 33199, USA

References

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• [5] V. Markovich, I. Fita, A. Wisniewski, D. Mogilyansky, R. Puzniak, L. Titelman, C. Martin, G. Gorodetsky, Phys. Rev. B 81, 094428 (2010), doi: 10.1103/PhysRevB.81.094428
• [6] A.H. Morrish, The Physical Principles of Magnetism, IEEE, 2001, doi: 10.1002/9780470546581

Identifiers

DOI

10.12693/APhysPolA.131.774