Structural, magnetic and electrical analysis of La1−x Nd x CrO3 (0.00 < x < 0.15): synthesised by sol–gel citrate combustion method

La1−xNdxCrO3 (x = 0.00, 0.05, 0.10 and 0.15) perovskites were synthesised successfully through sol–gel citrate combustion method. The influence of Nd in LaCrO3 lattice, microstructure, magnetic and electrical properties was evaluated by X-ray diffraction (XRD), Raman spectroscopy, field emission sca...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2016-12, Vol.80 (3), p.827-839
Main Authors: Blessington Selvadurai, A Paul, Pazhanivelu, V, Jagadeeshwaran, C, Murugaraj, R, Muthuselvam, I Panneer, Chou, F C, Md Gazzali, P M, Chandrasekaran, G
Format: Article
Language:English
Subjects:
Antiferromagnetism
Combustion
Electrical properties
Electrical resistivity
Emission analysis
Field emission microscopy
Field emission spectroscopy
Grain boundaries
Grain size
Impedance
Magnetic moments
Magnetic properties
Magnetization
Neel temperature
Neodymium
Paramagnetism
Perovskites
Raman spectroscopy
Scanning electron microscopy
Sol-gel processes
Spectrum analysis
Substitutes
X-ray diffraction
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Summary:La1−xNdxCrO3 (x = 0.00, 0.05, 0.10 and 0.15) perovskites were synthesised successfully through sol–gel citrate combustion method. The influence of Nd in LaCrO3 lattice, microstructure, magnetic and electrical properties was evaluated by X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscope (FESEM), vibrating sample magnetometer techniques and impedance analyser. The X-ray diffraction (XRD) and Raman study reveal the structural distortion associated with Nd3+ substitution. The FE-SEM reveals the wide range of grain size between 150 and 500 nm. The M (H) curve of the samples shows weak canted antiferromagnetism and paramagnetism at 5 and 300 K, respectively. The measured field cooled curves (FCC) and zero field cooled magnetisation processes on La1−xNdxCrO3 (x = 0.00, 0.05, 0.10 and 0.15) show negative magnetisation in the FCC mode, which get enhanced on Nd3+ substitution due to the antiparallel ordering of Nd3+ magnetic moment with respect to Cr3+ magnetic moment. The Neel temperature (TN) of the sample decreases on Nd substitution. The electrical conductivity spectra σ ′ ( f ) between 100 Hz and 1 MHz exhibit a single power law in the measured temperature range of 303–453 K. The impedance plot reveals the semiconductor nature with grain boundary for La1−xNdxCrO3 (x = 0.00, 0.05, 0.10 and 0.15) samples. Graphical Abstract
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-016-4151-8