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11 results on '"Mudivarthi, C."'

2. Finite element model-simulation-based characterization of a magnetostrictive gyrosensor

Author

Marschner, U., Graham, F., Mudivarthi, C., Yoo, J.-H., Neubert, H., and Flatau, A.B.

Subjects
Coriolis force -- Analysis, Magnetoelectric effect -- Analysis, Sensors -- Analysis, Physics
Abstract

The article talks about a newly developed sensor, which can be employed for the transduction of Coriolis-induced forces into an electrical output. The magnetic induction distribution is shown to be highly dependent on the bending shape and magnetoelastic properties of the sensor patch.

Published
2010

3. Magnetostriction and Magnetic Heterogeneities in Iron-Gallium

Author

MARYLAND UNIV COLLEGE PARK DEPT OF MATERIALS SCIENCE AND ENGINEERING, Laver, M, Mudivarthi, C, Cullen, J R, Flatau, A B, Chen, W, Watson, S M, Wuttig, M, MARYLAND UNIV COLLEGE PARK DEPT OF MATERIALS SCIENCE AND ENGINEERING, Laver, M, Mudivarthi, C, Cullen, J R, Flatau, A B, Chen, W, Watson, S M, and Wuttig, M

Abstract

Iron-gallium alloys Fe(sub 1-x)Ga(sub x) exhibit an exceptional increase in magnetostriction with gallium content. We present small-angle neutron scattering investigations on a Fe(sub 0:81)Ga(sub 0:19) single crystal. We uncover heterogeneities with an average spacing of 15 nm and with magnetizations distinct from the matrix. The moments in and around the heterogeneities are observed to reorient with an applied magnetic field or mechanical strain. We discuss the possible roles played by nanoscale magnetic heterogeneities in the mechanism for magnetostriction in this material., Published in Physical Review Letters, v105 article ID 027202, 8 Jul 2010. Prepared in collaboration with the Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen, Switzerland, the Materials Research Division, Ris DTU, Technical University of Denmark, Roskilde, Denmark, the Nano-Science Center, Niels Bohr Institute, University of Copenhagen, K benhavn, Denmark, the Department of Aerospace Engineering, University of Maryland, College Park, the NIST Center for Neutron Research (NCNR), Gaithersburg, MD, and Indiana University, Bloomington. sponsored in part by ONR N00014-06-1-0530 and N00014-01-1-0761.

Published
2010

4. Magnetostriction and Magnetic Heterogeneities in Iron-Gallium

Author

Laver, Mark, Mudivarthi, C., Cullen, J.R., Flatau, A.B., Chen, W.-C., Watson, S.M., Wuttig, M., Laver, Mark, Mudivarthi, C., Cullen, J.R., Flatau, A.B., Chen, W.-C., Watson, S.M., and Wuttig, M.

Abstract

Iron-gallium alloys Fe1-xGax exhibit an exceptional increase in magnetostriction with gallium content. We present small-angle neutron scattering investigations on a Fe0.81Ga0.19 single crystal. We uncover heterogeneities with an average spacing of 15 nm and with magnetizations distinct from the matrix. The moments in and around the heterogeneities are observed to reorient with an applied magnetic field or mechanical strain. We discuss the possible roles played by nanoscale magnetic heterogeneities in the mechanism for magnetostriction in this material. © 2010 The American Physical Society

Published
2010

6. Origin of magnetostriction in Fe-Ga

Author

Mudivarthi, C., Laver, Mark, Cullen, J. R., Flatau, A. B., Wuttig, M., Mudivarthi, C., Laver, Mark, Cullen, J. R., Flatau, A. B., and Wuttig, M.

Published
2010

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