Charge conduction mechanisms and MR behaviour of sol–gel-grown nanostructured La$_{0.6}$Nd$_{0.1}$Sr$_{0.3}$MnO$_3$ manganites
HETAL BORICHA S B KANSARA BHARGAV RAJYAGURU SAPANA SOLANKI K N RATHOD DAVIT DHRUV P S SOLANKI N A SHAH
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In this communication, structure and charge, conduction mechanisms have been understood for sol–gel grown nanostructured La$_{0.6}$Nd$_{0.1}$Sr$_{0.3}$MnO$_3$ (LNSMO) manganites prepared at different process temperatures under air and oxygen environments. Obtained X-ray diffraction patterns of all the samples were analysed using Rietveld refinements and obtained structural lattice parameters have been discussed in correlation with resistivity behaviour of the samples. Observed low temperature resistivity upturn behaviour has been examined in the context of electron–electron scattering mechanism. Metallic and insulating/semiconducting behaviours of all the nanostructured LNSMO manganites have been understood by using various models and mechanisms. Magnetoresistance isotherms have also been theoretically fitted and separate grain and grain boundary contributions have been studied for LNSMO manganite samples. Allobtained fitting parameters have been discussed in the context of role of applied magnetic field, process temperature and annealing environment.
HETAL BORICHA1 S B KANSARA1 BHARGAV RAJYAGURU1 SAPANA SOLANKI1 K N RATHOD1 DAVIT DHRUV1 P S SOLANKI1 N A SHAH1
Volume 45, 2022
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Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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