Fe ion doping effect on electrical and magnetic properties of La 0.7Ca0.3Mn1-xFexO3 (0 ≤ x ≤ 1)

Neeraj Kumar, H. Kishan, A. Rao, V. P.S. Awana

Research output: Contribution to journalArticle

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Abstract

Here we report the structural, electrical and magnetic properties of Fe doped La0.7Ca0.3Mn1-xFexO 3 (LCMFO; 0 ≤ x ≤ 1) prepared by conventional solid state reaction method. Simulated data on XRD shows an increase in volume with an increase in Fe ion concentration. XPS supports that Fe3+ ions directly substitute Mn3+ ions. Shifting towards lower wave number and symmetric IR band structure confirms increase in volume and homogeneous distribution of Fe ions. Fe ion does not contribute in double-exchange (DE) conduction mechanism due to its stable half filled 3d orbital. The presence of Fe3+ ions encourages anti-ferromagnetism (AFM) generated by super-exchange interaction and suppress insulator-metal transition temperature (TIM). Magnetic measurements show the existence of magnetic polarons supported by increase in volume of unit cell and deviation from Curie-Weiss law.

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalJournal of Alloys and Compounds
Volume502
Issue number2
DOIs
Publication statusPublished - 23-07-2010

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Magnetic properties
Electric properties
Doping (additives)
Ions
Polarons
Ferromagnetism
Exchange interactions
Magnetic variables measurement
Solid state reactions
Band structure
Superconducting transition temperature
Structural properties
Ion exchange
X ray photoelectron spectroscopy
Metals

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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Fe ion doping effect on electrical and magnetic properties of La 0.7Ca0.3Mn1-xFexO3 (0 ≤ x ≤ 1). / Kumar, Neeraj; Kishan, H.; Rao, A.; Awana, V. P.S.

In: Journal of Alloys and Compounds, Vol. 502, No. 2, 23.07.2010, p. 283-288.

Research output: Contribution to journalArticle

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AU - Kumar, Neeraj

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AU - Awana, V. P.S.

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AB - Here we report the structural, electrical and magnetic properties of Fe doped La0.7Ca0.3Mn1-xFexO 3 (LCMFO; 0 ≤ x ≤ 1) prepared by conventional solid state reaction method. Simulated data on XRD shows an increase in volume with an increase in Fe ion concentration. XPS supports that Fe3+ ions directly substitute Mn3+ ions. Shifting towards lower wave number and symmetric IR band structure confirms increase in volume and homogeneous distribution of Fe ions. Fe ion does not contribute in double-exchange (DE) conduction mechanism due to its stable half filled 3d orbital. The presence of Fe3+ ions encourages anti-ferromagnetism (AFM) generated by super-exchange interaction and suppress insulator-metal transition temperature (TIM). Magnetic measurements show the existence of magnetic polarons supported by increase in volume of unit cell and deviation from Curie-Weiss law.

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