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Electrical Transport Properties of La0.5Sr0.5CrO3 Ceramics

La0.5Sr0.5CrO3 세라믹스의 전기전도특성

Woo-Hwan Jung†
정 우환†
Division of Electrical Engineering, Howon University, Gunsan, Junbuk 54058, Korea
호원 대학교 전기공학부
†Corresponding author jungwoohwan@gmail.com (W. H. Jung, Howon Univ.)
January 2016. pp. 35-41
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Abstract

The electrical transport properties of La0.5Sr0.5CrO3 below room temperatures were investigated by dielectric, dc resistivity, magnetic properties and thermoelectric power. Below TC, La0.5Sr0.5CrO3 contains a dielectric relaxation process in the tangent loss and electric modulus. The La0.5Sr0.5CrO3 involves the transition from high temperature thermal activated conduction process to low temperature one. The transition temperature corresponds well to the Curie point. The relaxation mechanism has been discussed in the frame of electric modulus spectra. The scaling behavior of the modulus suggests that the relaxation mechanism describes the same mechanism at various temperatures. The low temperature conduction and relaxation takes place in the ferromagnetic phase. The ferromagnetic state in La0.5Sr0.5CrO3 indicates that the electron - magnon interaction occurs, and drives the carriers towards localization in tandem with the electron - lattice interaction even at temperature above the Curie temperature.

Keywords
dielectric relaxation
electron - magnon interaction
electron-phonon interaction
small polaron
spin polaron
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 26
  • No :1
  • Pages :35-41
  • Received Date : 2015-07-30
  • Revised Date : 2015-11-17
  • Accepted Date : 2015-12-22
  • DOI :https://doi.org/10.3740/MRSK.2016.26.1.35
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