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Effect of Fe doping on structural, magnetic, and electrical properties of non-magnetic and magnetic rare earth-based perovskite chromites La0.5Nd0.5Cr1-x Fe x O3 (0 ≤ x ≤ 1)

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Abstract

The structural, magnetic, and electrical properties of new series La0.5Nd0.5Cr1-x Fe x O3 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) have been reported. All the phases crystallize in the orthorhombic symmetry with Pbnm space group. The unit cell volume of La0.5Nd0.5Cr1-x Fe x O3 increases monotonically with increasing Fe doping. Magnetization studies showed that all our investigated phases (except x = 0.8 and 1.0) exhibit a paramagnetic–anti-ferromagnetic transition at low temperature. The variation in Neel temperature (T N) with increasing x can be explained in terms of magnetic interactions due to Fe doping. Irreversibility between the zero-field-cooled (ZFC) and field-cooled (FC) magnetization is clearly seen close to T N. All the phases show that insulating behavior and the transport properties are dominated by the polaron hopping mechanism with increase in polaron hopping energy with Fe content.

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Acknowledgements

Authors are also thankful to Dr. Harpreet Singh, Central Research Facility Section, Indian Institute of Technology Ropar, for recording XRD. Thanks are also due to Prof. Ramesh Chandra, Institute Instrumentation Centre, Indian Institute of Technology, Roorkee, for recording EDX and SEM.

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  1. Department of Chemistry, University of Jammu, Jammu, 180 006, India

    Surby Gupta, Arun Mahajan, Suram Singh & Devinder Singh

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  1. Surby Gupta
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  2. Arun Mahajan
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  4. Devinder Singh
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Correspondence to Devinder Singh.

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Gupta, S., Mahajan, A., Singh, S. et al. Effect of Fe doping on structural, magnetic, and electrical properties of non-magnetic and magnetic rare earth-based perovskite chromites La0.5Nd0.5Cr1-x Fe x O3 (0 ≤ x ≤ 1). Ionics 24, 459–468 (2018). https://doi.org/10.1007/s11581-017-2220-9

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