Fe ion doping effect on electrical and magnetic properties of La0.7Ca0.3Mn1−xFexO3 (0 ≤ x ≤ 1)
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Fe ion doping effect on electrical and magnetic properties of La0.7Ca0.3Mn1−xFexO3 (0 ≤ x ≤ 1)
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| Creator |
Kumar, Neeraj
Kishan, H. Rao, A. Awana, V. P. S. |
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| Subject |
Chemistry
Materials Science Metallurgy & Metallurgical Engineering |
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| Description |
Here we report the structural, electrical and magnetic properties of Fe doped La0.7Ca0.3Mn1−xFexO3 (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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| Publisher |
Elsevier
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| Date |
2010-04-25
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/160/1/132.pdf
Kumar, Neeraj and Kishan, H. and Rao, A. and Awana, V. P. S. (2010) Fe ion doping effect on electrical and magnetic properties of La0.7Ca0.3Mn1−xFexO3 (0 ≤ x ≤ 1). Journal of Alloys and Compounds, 502 (2). pp. 283-288. ISSN 0925-8388 |
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| Relation |
http://dx.doi.org/10.1016/j.jallcom.2010.04.187
http://npl.csircentral.net/160/ |
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