High/low-moment phase transition in hexagonal Mn-Fe-P-Si compounds | Zendy

Nguyễn Quốc Dũng | Zendy; L. Zhang | Zendy; Z.Q. Ou | Zendy; L. Zhao | Zendy; Lambert van Eijck | Zendy; A. M. Mulders | Zendy; Maxim Avdeev | Zendy; Emmanuelle Suard | Zendy; N.H. van Dijk | Zendy; E. Brück | Zendy

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High/low-moment phase transition in hexagonal Mn-Fe-P-Si compounds

Author(s) -

Nguyễn Quốc Dũng,

L. Zhang,

Z.Q. Ou,

L. Zhao,

Lambert van Eijck,

A. M. Mulders,

Maxim Avdeev,

Emmanuelle Suard,

N.H. van Dijk,

E. Brück

Publication year - 2012

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.86.045134

Subject(s) - magnetic moment , materials science , neutron diffraction , condensed matter physics , lattice constant , hexagonal crystal system , atmospheric temperature range , phase transition , hexagonal phase , transition temperature , magnetic susceptibility , diffraction , crystallography , crystal structure , physics , chemistry , thermodynamics , superconductivity , optics

Using high-resolution neutron diffraction measurements for Mn-rich hexagonal Mn-Fe-P-Si compounds, we show that the substitution of Mn for Fe on the 3f sites results in a linear decrease of the Fe/Mn(3f) magnetic moments, while the Mn(3g) magnetic moments remain constant. With increasing temperature, the Mn(3g) magnetic moments show almost no change, while the Fe/Mn(3f) moments decrease quickly when the transition temperature is approached. The reduction of the magnetic moments at the transition temperature and in the high-temperature range is discussed based on changes in interatomic distances and lattice parameters and high-temperature magnetic-susceptibility measurement

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