Epitaxial La0.5Sr0.5CoO3electrode films for ferroelectric device applications
作者:
JeffreyT. Cheung,
PeterE. D. Morgan,
R. Neugaonkar,
Mark Goorsk,
期刊:
Integrated Ferroelectrics
(Taylor Available online 1993)
卷期:
Volume 3,
issue 2
页码: 147-157
ISSN:1058-4587
年代: 1993
DOI:10.1080/10584589308216709
出版商: Taylor & Francis Group
关键词: pulsed laser deposition;LaSrCoO;PLZT;conductive perovskite;ferroelectric
数据来源: Taylor
摘要:
We have grown high quality La0.5Sr0.5CoO3thin films by Pulsed Laser Deposition. This material is a electrically conducting perovskite which can be used as structurally compatible electrodes for devices using ferroelectric materials such as Pb-La-Zr-Ti-O (PLZT). Oxygen stability was investigated under various annealing conditions. LSCO/PLZT/LSCO heterostructures were grown epitaxially on SrTiO3(STO) and MgO substrates. P-E hysteresis loop was observed with Pr= 20 μC/cm2and Ec= 24 kV/cm. Direct observation of the piezoelectric effect in PLZT was made by measuring the PLZT c-axis lattice constant under various electric fields. LSCO/STO superlattice was also grown by PLD. The superlattice showed excellent crystallinity with a Rutherford Backscattering (RBS) channeling minimum yield of only 3.6%.
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