Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1997-03-04
1999-02-02
Evans, Elizabeth
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428210, 428701, 428702, B32B 300
Patent
active
058662383
ABSTRACT:
A first ferroelectric thin film device is provided with a first substrate consisting of polycrystal, amorphous material or metal material and a first ferroelectric thin film formed on the first substrate. The average of thermal expansion coefficients of the substrate from room temperature to temperature for forming the ferroelectric thin film is 70.times.10.sup.-7 /.degree.C. or more. At least 75% of crystal axes of the first ferroelectric thin film are oriented in <001>-direction. A second ferroelectric thin film device is provided with a second substrate consisting of amorphous material and a second ferroelectric thin film formed on the second substrate. The average of thermal expansion coefficients of the substrate from room temperature to temperature for forming the ferroelectric thin film is 50.times.10.sup.-7 /.degree.C. or less. At least 75% of crystal axes of the second ferroelectric thin film are oriented in <100>direction.
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Fujii Eiji
Fujii Satoru
Okano Masayuki
Takayama Ryoichi
Tomita Yoshihiro
Evans Elizabeth
Minolta Co. , Ltd.
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