Published January 2005
| Version v1
Journal article
Electron-phonon coupling mechanism of premartensitic transformation in Ni2MnGa alloy
Creators
- 1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Huashan Road 1954, Shanghai 200030 (China)
- 2. Department of Physics, Shanghai Jiao Tong University, Huashan Road 1954, Shanghai 200030 (China)
Description
The driving force of premartensitic transformation (PT) based on the electron-transverse acoustic (TA) phonon interaction Hamiltonian was first calculated. The driving force of Ni2MnGa alloy is about 172.2 meV, larger than that of NiTi-Fe or Ni-Al alloy. The nucleation rate of PT has also been investigated in the interaction system. Considering the electron-phonon interaction and the condensation of TA phonon, double sine-Gordon equation of atomic phase angle has been proposed to study the nonlinear characteristics of PT and the electron-TA phonon coupling mechanism may be taken as its main mechanism
Additional details
Identifiers
- DOI
- 10.1016/j.scriptamat.2004.09.018;
- PII
- S1359-6462(04)00541-X;
Publishing Information
- Journal Title
- Scripta Materialia
- Journal Volume
- 52
- Journal Issue
- 2
- Journal Page Range
- p. 123-127
- ISSN
- 1359-6462
- CODEN
- SCMAF7
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38053739
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALLOYS; ELECTRON-PHONON COUPLING; ELECTRONS; HAMILTONIANS; MEV RANGE 100-1000; NONLINEAR PROBLEMS; NUCLEATION; PHASE TRANSFORMATIONS; PHONONS; SINE-GORDON EQUATION
- Descriptors DEC
- COUPLING; ELEMENTARY PARTICLES; ENERGY RANGE; EQUATIONS; FERMIONS; FIELD EQUATIONS; LEPTONS; MATHEMATICAL OPERATORS; MEV RANGE; QUANTUM OPERATORS; QUASI PARTICLES
Optional Information
- Copyright
- Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.