The transformation variant of the fcc to fct transformation in FePt thin films was tailored by controlling the stresses in the thin films, thereby allowing selection of in- or out-of-plane -axis orientation. FePt thin films were deposited at ambient temperature on several substrates with differing coefficients of thermal expansion relative to the FePt, which generated thermal stresses during the ordering heat treatment. X-ray diffraction analysis revealed preferential out-of-plane -axis orientation for FePt films deposited on substrates with a similar coefficients of thermal expansion, and random orientation for FePt films deposited on substrates with a very low coefficient of thermal expansion, which is consistent with theoretical analysis when considering residual stresses.
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9 May 2005
Research Article|
May 05 2005
Texture formation in FePt thin films via thermal stress management
P. Rasmussen;
P. Rasmussen
Department of Mechanical Engineering and Center for Materials Research and Analysis,
University of Nebraska-Lincoln
, N104WSEC, P. O. Box 880656, Lincoln, Nebraska 68512 USA
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X. Rui;
X. Rui
Department of Mechanical Engineering and Center for Materials Research and Analysis,
University of Nebraska-Lincoln
, N104WSEC, P. O. Box 880656, Lincoln, Nebraska 68512 USA
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J. E. Shield
J. E. Shield
Department of Mechanical Engineering and Center for Materials Research and Analysis,
University of Nebraska-Lincoln
, N104WSEC, P. O. Box 880656, Lincoln, Nebraska 68512 USA
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Appl. Phys. Lett. 86, 191915 (2005)
Article history
Received:
January 18 2005
Accepted:
March 22 2005
Citation
P. Rasmussen, X. Rui, J. E. Shield; Texture formation in FePt thin films via thermal stress management. Appl. Phys. Lett. 9 May 2005; 86 (19): 191915. https://doi.org/10.1063/1.1924889
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