Publication detail

Nanotwinning and Modulation of Martensitic Structures in Ni2MnGa Alloy: An ab initio Study

ZELENÝ, M.

English title

Nanotwinning and Modulation of Martensitic Structures in Ni2MnGa Alloy: An ab initio Study

Type

journal article in Web of Science

Language

en

Original abstract

The ab initio electronic structure calculations show importance of nanotwinning concept for understanding martensitic lattice geometry in Ni2MnGa magnetic shape memory alloys. All modulated martensitic structures, 4O, 10M and 14M, are stabilized due to the presence of nanotwin double layers in the structure, i.e., nanotwins consisting of two (101) lattice planes of nonmodulated martensitic structure. In all structures, the most significant decrease of total energy arises from a shift of Mn and Ga atoms at the nanotwin boundaries by about 1% of atomic coordinate.

English abstract

The ab initio electronic structure calculations show importance of nanotwinning concept for understanding martensitic lattice geometry in Ni2MnGa magnetic shape memory alloys. All modulated martensitic structures, 4O, 10M and 14M, are stabilized due to the presence of nanotwin double layers in the structure, i.e., nanotwins consisting of two (101) lattice planes of nonmodulated martensitic structure. In all structures, the most significant decrease of total energy arises from a shift of Mn and Ga atoms at the nanotwin boundaries by about 1% of atomic coordinate.

Keywords in English

magnetic shape memory alloys, martensite, ab initio

Released

06.12.2018

ISSN

1898-794X

Volume

134

Number

3

Pages from–to

658–661

Pages count

4

BIBTEX


@article{BUT151623,
  author="Martin {Zelený},
  title="Nanotwinning and Modulation of Martensitic Structures in Ni2MnGa Alloy: An ab initio Study",
  year="2018",
  volume="134",
  number="3",
  month="December",
  pages="658--661",
  issn="1898-794X"
}