SURFACE ACOUSTIC WAVE PROPERTIES OF RF SPUTTERED NICKEL FILMS ON LITHIUM NIOBATE.

William P. Robbins, Edward M. Simpson

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

RF sputtered thin films of nickel deposited on YZ-LiNbO//3 have been used for magnetically variables delay lines and oscillators. The rf sputtered films have shown a factor of three increase in velocity variation DELTA v/v and a factor of ten decrease in required magnetic bias field compared to similar thermally evaporated films. At 189 MHz a DELTA v/v of 0. 07% in a parallel field of 100 oe was observed. An approximate analytical estimate of DELTA v/v is developed based on a stress-induced perpendicular anisotropy which agrees well with measured results. The device was also operated as a convolver in order to study the nonlinearities in the film. An internal efficiency of minus 77 dbm was obtained for 189 MHz input signals parallel field of 200 oe.

Original languageEnglish (US)
Pages (from-to)658-661
Number of pages4
Journal[No source information available]
StatePublished - Jan 1 2017
EventUltrason Symp Proc - Cherry Hill, NJ
Duration: Sep 25 1978Sep 27 1978

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