Modulated structure in the martensite phase of Ni1.8Pt0.2MnGa: a neutron diffraction study

Sanjay Singh; K. R. A. Ziebeck; E. Suard; P. Rajput; S. Bhardwaj; A. M. Awasthi; S. R. Barman

doi:10.1063/1.4760270

Modulated structure in the martensite phase of Ni1.8Pt0.2MnGa: a neutron diffraction study

Materials Science 2012-11-02 v1

Authors: Sanjay Singh , K. R. A. Ziebeck , E. Suard , P. Rajput , S. Bhardwaj , A. M. Awasthi , S. R. Barman

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Abstract

7M orthorhombic modulated structure in the martensite phase of Ni1.8Pt0.2MnGa is reported by powder neutron diffraction study, which indicates that it is likely to exhibit magnetic field induced strain. The change in the unit cell volume is less than 0.5% between the austenite and martensite phases, as expected for a volume conserving martensite transformation. The magnetic structure analysis shows that the magnetic moment in the martensite phase is higher compared to Ni2MnGa, which is in good agreement with magnetization measurement.

Keywords

ni1.8pt0.2mnga martensite phase modulated structure neutron diffraction magnetic field induced strain magnetic structure

Cite

@article{arxiv.1209.5508,
  title  = {Modulated structure in the martensite phase of Ni1.8Pt0.2MnGa: a neutron diffraction study},
  author = {Sanjay Singh and K. R. A. Ziebeck and E. Suard and P. Rajput and S. Bhardwaj and A. M. Awasthi and S. R. Barman},
  journal= {arXiv preprint arXiv:1209.5508},
  year   = {2012}
}

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