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HomeKey Engineering MaterialsKey Engineering Materials Vol. 519Influence of Ca Content on LITV Effect of...

Influence of Ca Content on LITV Effect of La_1-xCa_xMnO₃ Epitaxial Thin Films

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Abstract:

La_1-xCa_xMnO₃ (x=0.0-1.0) epitaxial thin films were deposited on both tilted and untilted LaAlO₃ (0 0 1) single crystalline substrates using PLD (pulsed laser deposition) technique, in which the employed qualified polycrystalline La_1-xCa_xMnO₃ targets were synthesized by sol-gel method. The structural properties and the ultraviolet LITV (laser induced thermoelectric voltage) effect of the as-grown films on the tilted substrates were studied. The results demonstrate that the intensities of the LITV signals depend non-monotonously on Ca content, that is, the peak values of the LITV signals firstly increase and then decrease with Ca content increasing. The maximal peak value of LITV was found in the film with Ca=0.33.

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Periodical:

Key Engineering Materials (Volume 519)

Pages:

220-223

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.519.220

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Online since:

July 2012

Authors:

Ji Ma, Mya Theingi, Hui Zhang, Xuan Ding, Ying Juan Li, Qing Ming Chen

Keywords:

Epitaxial Thin Films, La_1-xCa_xMnO₃, LITV

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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