TITLE

Beam model for calculating magnetostriction strains in thin films and multilayers

AUTHOR(S)
Wetherhold, Robert C.; Chopra, Harsh Deep
PUB. DATE
December 2001
SOURCE
Applied Physics Letters;12/3/2001, Vol. 79 Issue 23, p3818
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A standard technique to measure the magnetostriction strain in thin films involves measurement of the end deflection or slope of cantilever beams using optical deflectometry or capacitive methods. This article presents a general beam model for inferring magnetostriction strain from the end deflection or slope data. This model greatly extends the range of applicability over existing shell models, allowing for inference of magnetostriction strains for practical film/substrate thickness ratios that are important in microelectromechanical systems (MEMS) and bio-microelectromechanical systems (bio-MEMS). If the properties of individual layers are known, the beam theory can be used to design multilayer MEMS or bio-MEMs beams over a full range of thickness ratios. © 2001 American Institute of Physics.
ACCESSION #
5562351

 

Related Articles

  • Laser beam scanning using a local deflector integrated with an effective mode filter. Mukai, S.; Kaneko, Y.; Watanabe, M.; Itoh, H.; Yajima, H. // Applied Physics Letters;12/21/1987, Vol. 51 Issue 25, p2091 

    Deflection of a diode laser beam using an injection-type deflector monolithically integrated with a very long waveguide is demonstrated. The deflector and the waveguide constitute a laser cavity. The waveguide filters out higher order modes, and only the fundamental-mode light is incident on the...

  • Determination of the Thermal Physical Properties of Ceramics and Parameters of Cracks by a Laser Optical-Beam Deflection Method. Muratikov, K. L.; Glazov, A. L. // Technical Physics;Jun2001, Vol. 46 Issue 6, p749 

    A formation model for optical-beam deflection signals in ceramics is constructed. The generation of temperature waves by laser radiation in ceramics with regard for the anisotropy of their thermal physical properties is considered. The thermal physical parameters of silicon nitride ceramic are...

  • Probing of a random phase screen by a focused spatially modulated laser beam: deflection of interference fringes. Ryabukho, V. P.; Chausskii, A. A. // Technical Physics Letters;Jan99, Vol. 25 Issue 1, p23 

    Deflection of interference fringes in a diffraction field was investigated under conditions in which a laser beam with a regular interference structure was finely focused onto a random phase screen. It was established that the contrast of the average-intensity fringes depends analytically on the...

  • AlGaAs grating surface-emitting beam deflector utilizing carrier-induced refractive index change. Tone, Kiyoshi; Nagata, Hisao; Yamashita, Ken // Applied Physics Letters;4/2/1990, Vol. 56 Issue 14, p1299 

    A new type of AlGaAs grating surface-emitting beam deflector is proposed. The deflection is controlled by a carrier-induced refractive index change of the waveguide on which the grating output coupler is fabricated. About 0.6° of the maximum deflection angle is obtained at the injection...

  • Direct experimental observation of interactive third and fifth order nonlinearities in a time-.... Song Wu; Zhang, X.-C. // Applied Physics Letters;8/24/1992, Vol. 61 Issue 8, p919 

    Investigates the use of Kerr lens deflection to separate third and fourth order polarizations for a time-resolved four-wave mixing experiment. Dependence of the deflection angle on the magnitude of the displacement; Measurement of the Kerr lens effect; Impact of finite pulse duration.

  • Scanning acousto-electro-optic light deflector with uniform intensity response. Lee, Hyuk // Applied Physics Letters;7/7/1986, Vol. 49 Issue 1, p24 

    A deflector whose scanned output beam is of uniform intensity with respect to the scan angle is proposed. This deflector is based on the control of the phase mismatch of the acousto-optic deflector via acousto-electro-optic effect. An experimental result of this deflector is presented.

  • An integrated thin-film thermo-optic waveguide beam deflector. Tang, Suning; Suning Tang; Li, Bulang; Bulang Li; Han, Xinghua; Xinghua Han; Taboada, John M.; Jang, Chiou-Hung; Chiou-Hung Jang; Kim, Jin-Ha; Jin-Ha Kim; Sun, Lin; Lin Sun; Chen, Ray T. // Applied Physics Letters;4/17/2000, Vol. 76 Issue 16 

    We have demonstrated the operation of a thin-film thermo-optical beam deflector in a three-layer optical planar waveguide. The fabricated waveguide beam deflector consists of a thin-film SiO[sub 2] bottom cladding layer, a thin-film polymer top cladding layer, and alternatively positioned...

  • Electrostatic septum for kilowatt heavy ion beams. Alfredson, S.; Marti, F.; Miller, P.; Poe, D.; Stork, G. // AIP Conference Proceedings;2001, Vol. 600 Issue 1, p133 

    A septum of improved design has replaced the standard tungsten septum with uniform thickness used in the deflector for the K1200 cyclotron at Michigan State University.[1] A V-notch in the leading edge enhanced radiation cooling, and an increased septum thickness away from the median plane...

  • Numerical simulation of achromatic deflecting systems. Baranova, L. A.; Yavor, S. Ya. // Technical Physics;Dec97, Vol. 42 Issue 12, p1449 

    A deflecting system formed by two parallel-plate capacitors on opposite sides of an optoelectronic element that alters the energy of a beam of charged particles, is calculated numerically. The conditions for correcting the chromatic beam spreading in the plane of the target are found. Good...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics