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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 665Swift Heavy Ion Irradiation Studies on the...

Swift Heavy Ion Irradiation Studies on the Transport in La_0.8-xPr_0.2Sr_xMnO₃ Manganite Films

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Abstract:

Thin films of La_0.8-xPr_0.2Sr_xMnO₃ (LPSMO) (x = 0.1, 0.2, 0.3) manganite, synthesized using pulsed laser deposition (PLD) technique, were irradiated by 200MeV Ag⁺¹⁵ ions with an ion fluence of 5 × 10¹¹ ions/cm². Structural and microstructural characterizations have been carried out using XRD and AFM show single crystalline nature of the films having island like grain growth. The structural and grain morphology modifications due to irradiation has been observed. Temperature dependent resistivity measurements have been carried out for all the films before and after irradiation, which reveal a reduction in the resistivity and enhancement in insulator - metal (I-M) transition temperature (T_P) with Sr content (x) resulting in improved transport (reduced resistivity and enhanced T_P) in the films which can be attributed to the irradiation induced improved crystallinity and grain morphology. Temperature coefficient of resistance (TCR) improves on irradiation which is useful for practical applications.

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Periodical:

Advanced Materials Research (Volume 665)

Pages:

63-69

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.665.63

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Online since:

February 2013

Authors:

Ashish Ravalia, Megha Vagadia, Priyanka Trivedi, M.J. Keshvani, Uma Khachar, B.T. Savalia, P.S. Solanki, K. Asokan, D.G. Kuberkar

Keywords:

Manganite, SHI Irradiation, Transport

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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