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Multiple magnetic transitions and magnetocaloric effect in hydrothermally synthesized single crystalline La0.5Sr0.5MnO3 nanowires

Published online by Cambridge University Press:  12 July 2012

Sayan Chandra ,
Anis Biswas ,
Subarna Datta ,
Barnali Ghosh ,
A.K. Raychaudhuri ,
M.H. Phan  and
H. Srikanth
Sayan Chandra
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620, USA
Anis Biswas
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620, USA
Subarna Datta
Affiliation:
Unit for Nanoscience, S N Bose National Centre for Basic Science, Kolkata 700098, India
Barnali Ghosh
Affiliation:
Unit for Nanoscience, S N Bose National Centre for Basic Science, Kolkata 700098, India
A.K. Raychaudhuri
Affiliation:
Unit for Nanoscience, S N Bose National Centre for Basic Science, Kolkata 700098, India
M.H. Phan
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620, USA
H. Srikanth*
Affiliation:
Department of Physics, University of South Florida, Tampa, FL 33620, USA
*
*Corresponding author: [email protected]
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Abstract

We have successfully prepared La0.5Sr0.5MnO3nanowires using a novel hydrothermal synthesis process and studied their magnetic and magnetocaloric properties. The system exhibits an inverse magnetocaloric effect (IMCE) around 175 K indicating presence of significant AFM correlation. The MCE study reveals a clear paramagnetic (PM) to ferromagnetic (FM) transition near room temperature (T ~ 325K) which is followed by onset of AFM at lower temperatures. The development of the FM-like magnetic state at low temperature is attributed to the enhanced double exchange (DE) driven ferromagnetism in AFM state as predicted by recent theoretical studies.

Keywords

magneticnanostructurehydrothermal
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1454: Symposium HH – Nanocomposites, Nanostructures and Heterostructures of Correlated Oxide Systems , 2012 , pp. 63 - 68
Copyright
Copyright © Materials Research Society 2012

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References

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