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Applied Physics Letters / Volume 94 / Issue 16 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 94, 161908 (2009); http://dx.doi.org/10.1063/1.3116618 (3 pages)

Theoretical prediction of shape memory behavior and ferrimagnetism in Mn2NiIn

Aparna Chakrabarti1 and S. R. Barman2

1Raja Ramanna Centre for Advanced Technology, Indore 452013, India
2UGC-DAE Consortium for Scientific Research, Indore 452001, India

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(Received 19 February 2009; accepted 20 March 2009; published online 23 April 2009)

Using density functional theory, we show that in Mn2NiIn a phase transition from cubic to tetragonal structure results in a lowering of the total energy, indicating occurrence of martensitic phase transition. The structural phase transition is nearly volume conserving, which is a characteristic of a shape memory alloy. The magnetic ground state is ferrimagnetic with antiparallel Mn spin moments and the total spin magnetization is 0.51μB in the martensitic phase. Thus, we predict that Mn2NiIn would behave like a magnetic shape memory alloy. The electronic structure and magnetic properties are explained by the spin polarized density of states.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

band structure, density functional theory, electronic density of states, ferrimagnetic materials, ground states, indium alloys, magnetic moments, magnetic transitions, magnetisation, manganese alloys, martensitic transformations, nickel alloys, shape memory effects, solid-state phase transformations, spin polarised transport, total energy

PACS

  • 81.30.Kf

    Martensitic transformations

  • 64.70.kd

    Metals and alloys

  • 75.50.Gg

    Ferrimagnetics

  • 71.20.Gj

    Other metals and alloys

  • 75.30.Kz

    Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)

  • 75.60.Ej

    Magnetization curves, hysteresis, Barkhausen and related effects

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3116618

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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