NONLINEAR-THEORY OF THE POWER DISSIPATION DUE TO THE MOTION OF HEAVY INTERSTITIALS IN OSCILLATING INHOMOGENEOUS FIELDS WITH STRONG STATIC BIAS

Date

1987-12-01

Author

OGURTANI, TO
SEEGER, A

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The atomic movements of heavy interstitials (located in octahedral interstices in a body-centred cubic lattice) in arbitrary time-dependent and inhomogeneous field with a strong static bias are described by a system of nonlinear autonomous first-order differential equations. The linearized form of these equations in the vicinity of the thermodynamic equilibrium state is solved exactly, using the discrete Fourier k-space transform supplemented by a Laplace transform with respect to time. The power dissipation associated with the hopping motion of the interstitial atoms in the presence of either a simple harmonic vibration or of propagating acoustic waves is determined. The implications of the nonlinear theory for the effective activation enthalpy of the Snoek-Köster relaxation are worked out for the limiting case of localized or delocalized interactions between the interstitials and dislocations.

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https://hdl.handle.net/11511/66059

Journal

JOURNAL DE PHYSIQUE

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Department of Metallurgical and Materials Engineering, Article

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Citation Formats

T. OGURTANI and A. SEEGER, “NONLINEAR-THEORY OF THE POWER DISSIPATION DUE TO THE MOTION OF HEAVY INTERSTITIALS IN OSCILLATING INHOMOGENEOUS FIELDS WITH STRONG STATIC BIAS,” JOURNAL DE PHYSIQUE, pp. 167–172, 1987, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66059.