Ferroelectric materials with chemical formula A(1-x)BxC(1-y)DyF3, and fabrication thereof
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United States of America Patent
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Apr 16, 2002
Grant Date -
N/A
app pub date -
Sep 14, 2000
filing date -
Sep 20, 1999
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Expired
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Abstract
Disclosed are ferroelectric materials with a chemical formula: A.sub.(1-x) B.sub.x C.sub.(1-y) D.sub.y F.sub.3 ; such as NaCaF.sub.3, or Na.sub.1-x K.sub.x CaF.sub.3, which are fabricated by deposition of source materials onto a (111) orientation substrate having a cubic lattice constant of between about 3.8 to 4.3 Angstroms, or onto a (001) orientation substrate having a hexagonal a-axis parameter of between about 5.4 to 6.2. A preferred deposition technique is pulsed laser deposition.
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