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

doi:10.1016/j.jallcom.2010.04.187

Fe ion doping effect on electrical and magnetic properties of La _0.7Ca_0.3Mn_1-xFe_xO₃ (0 ≤ x ≤ 1)

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

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

75 Citations (Scopus)

Abstract

Here we report the structural, electrical and magnetic properties of Fe doped La_0.7Ca_0.3Mn_1-xFe_xO 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 (T_IM). Magnetic measurements show the existence of magnetic polarons supported by increase in volume of unit cell and deviation from Curie-Weiss law.

Original language	English
Pages (from-to)	283-288
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	502
Issue number	2
DOIs	https://doi.org/10.1016/j.jallcom.2010.04.187
Publication status	Published - 23-07-2010

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2010.04.187

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

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.",

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AU - Kumar, Neeraj

AU - Kishan, H.

AU - Rao, A.

AU - Awana, V. P.S.

PY - 2010/7/23

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N2 - 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.

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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Fe ion doping effect on electrical and magnetic properties of La _0.7Ca_0.3Mn_1-xFe_xO₃ (0 ≤ x ≤ 1)

Abstract

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