TY - JOUR
T1 - Effect of high energy electron beam irradiation on the structural properties, electrical resistivity and thermopower of La0.5Sr0.5MnO3 manganites
AU - Chettri, Pronita
AU - Deka, Utpal
AU - Rao, Ashok
AU - Nagaraja, K. K.
AU - Okram, G. S.
AU - Petwal, Vikash Chandra
AU - Verma, Vijay Pal
AU - Dwivedi, Jishnu
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/5/15
Y1 - 2020/5/15
N2 - Bulk samples of La0.5Sr0.5MnO3 manganite have been subjected to electron beam irradiation of different dosages. As a consequence, the structural and electronic transport properties viz resistivity and thermoelectric power are affected to some extent. The stoichiometric content of the sample is confirmed through Energy Dispersive X-ray spectroscopy. X-ray diffraction study of the samples (unexposed and exposed to electron beam radiation) show that the samples crystallize in a single phase rhombohedral structure. Insulating behavior is displayed in the temperature range 10–300 K investigation for all the samples. Temperature dependent thermoelectric power data reveals n-type conductivity in the entire temperature zone. At high temperatures, it is concluded through detailed analysis that both resistivity and thermopower conform to small polaron hopping model. On the other hand, variable range polaron hopping model elucidates the transport characteristics at low temperatures.
AB - Bulk samples of La0.5Sr0.5MnO3 manganite have been subjected to electron beam irradiation of different dosages. As a consequence, the structural and electronic transport properties viz resistivity and thermoelectric power are affected to some extent. The stoichiometric content of the sample is confirmed through Energy Dispersive X-ray spectroscopy. X-ray diffraction study of the samples (unexposed and exposed to electron beam radiation) show that the samples crystallize in a single phase rhombohedral structure. Insulating behavior is displayed in the temperature range 10–300 K investigation for all the samples. Temperature dependent thermoelectric power data reveals n-type conductivity in the entire temperature zone. At high temperatures, it is concluded through detailed analysis that both resistivity and thermopower conform to small polaron hopping model. On the other hand, variable range polaron hopping model elucidates the transport characteristics at low temperatures.
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U2 - 10.1016/j.physb.2020.412119
DO - 10.1016/j.physb.2020.412119
M3 - Article
AN - SCOPUS:85081673904
SN - 0921-4526
VL - 585
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
M1 - 412119
ER -