期刊
CERAMICS INTERNATIONAL
卷 44, 期 16, 页码 19314-19318出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.07.159
关键词
Rare-earth orthoferrites; Leakage current; Mossbauer spectroscopy
资金
- Rajeev Gandhi National Fellowship (RGNF) [F1- 17.1/RGNF-2015-17-SC-TEL-2394/(SA-III/website)]
The structural, electrical, magnetic and Fe-57 Mossbauer studies of sol-gel synthesized polycrystalline Pr1-xAlxFeO3 (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.5) samples are reported in this paper and the phase purity of the materials was confirmed from Rietveld refinement of XRD pattern. From the magnetization studies it is observed that the Al doping at Pr site changed the magnetic ordering of the system at both room and low temperatures. The observed isomer-shift values from room temperature Mossbauer spectroscopy confirmed the charge state of the Fe ions and magnetic ordering in the compounds. Leakage current is observed to decrease with Al doping in the present work. From the leakage current density (J-E) measurements, it is observed that the space charge limited conduction (SCLC) dominates the conduction in lower and higher field regions for all the samples.
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