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DINESH UTHRA1,* , R. K. SINGH2
After the discovery of Colossal Magneto-Resistance (CMR) in the hole doped manganites, many scientists have carried out a variety of site selective substitutional studies on them to understand the underlying mechanism for this unique behaviour. In this paper, we have studied the fascinating features of Mn site substituted Pr based Doped rare earth Manganites Pr3/5Ca2/5Mn1-xZnxO3(x=0.00 & 0.15). The variation of physical properties like grain size, average valence of Mn site were observable and AC susceptibility measurement indicates disappearance of charged ordering. It is due to variable range hopping mechanism and magnetization verses applied field loop taken at 5K for both the compound Pr3/5Ca2/5Mn1-xZnxO3(x=0.00 & 0.15).x = 0.00 shows metamagnetic transition and x = 0.15 shows ferromagnetic nature at 5K < Tco. This shows increasing the population of hopping electrons and Mn3+/Mn4+ ratio are present in this compound..
Colossal Magneto-Resistance (CMR), Hole doped manganites average valence, Metamagnetic transition.
DINESH UTHRA, R. K. SINGH, Extraordinary features of Mn site substituted Pr based doped rare earth manganites Pr3/5Ca2/5Mn1-xZnxO3(x=0.00 & 0.15), Optoelectronics and Advanced Materials - Rapid Communications, 4, 3, March 2010, pp.322-327 (2010).
Submitted at: Jan. 25, 2010
Accepted at: March 12, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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