Sturtural, electrical and magnetic properties of Pr0.6-xBixSr0.4MnO3 (x=0.2 and 0.25)

Daivajna, Mamatha D and Rao, Ashok (2016) Sturtural, electrical and magnetic properties of Pr0.6-xBixSr0.4MnO3 (x=0.2 and 0.25). In: National Conference on Study of Matter Using Intense Radiation Sources and Under Extreme Conditions, 03/11/2016, UGC DAE Indore.

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Abstract

Rare earth manganites RE1-xAExMnO3 (where RE and AE are rare-earth and alkaline-earth ions, respectively) have received enormous attention in recent years essentially due to the fascinating properties such as colossal magneto-resistance (CMR), metal–insulator transition, charge ordering (CO), phase separation [1-3]. First-order phase transitions have been studied extensively in many materials. In magnetic materials, first-order phase transition generally gives rise to the coexisting phases that leads to peculiar functionality such as the magneto-caloric, colossal magnetoresistive, and magnetic shape-memory effects [4]. To confirm the existence of first-order transitions, macroscopic hysteresis is often taken as an important signature. Among the existing CMR manganites, Pr1-xSrxMnO3 (PSMO) series has been investigated extensively mostly to understand the physics behind the phenomena such as CMR, electro-resistance, and magneto-caloric effect (MCE) [1,5]. For the PSMO compounds with 0.20 < x < 0.45, a second-order phase transition from paramagnetic (PM) to ferromagnetic (FM) is observed [1]. The compounds of Pr1-x SrxMnO3 with x in the vicinity of 0.4 are of enormous importance due to the fact that they exhibit metal-insulator transitions (TMI) around room temperature. It is significant to mention that Bi-doped PSMO compounds exhibit high MCE and MR values and have potential for many technological applications [6-7].

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Resisitivity, manganites
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 30 Jan 2017 13:32
Last Modified: 30 Jan 2017 13:32
URI: http://eprints.manipal.edu/id/eprint/148223

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