THE CRYSTAL STRUCTURE OF Mn3Ga | Zendy

CHANG TAO-FAN | Zendy; LIANG CHING-KWEI | Zendy

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THE CRYSTAL STRUCTURE OF Mn<sub>3</sub>Ga

Author(s) -

CHANG TAO-FAN,

LIANG CHING-KWEI

Publication year - 1966

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.22.1004

Subject(s) - crystal structure , hexagonal crystal system , crystallography , materials science , homogeneity (statistics) , ideal (ethics) , crystal (programming language) , alloy , unit (ring theory) , chemistry , computer science , mathematics , programming language , composite material , philosophy , mathematics education , epistemology , machine learning

The crystal structure of Mn3Ga has been determined by means of the X-ray powder method. The unit cell is hexagonal, with a = 5.4065?, c = 4.3537?, and c/a = 0.8053 at 20℃ for the alloy containing 26.8 at. % Ga. The space group is D6h4-P63/mmc. Each unit cell contains two formula units, the six Mn atoms being situated at the 6(h) positions with xh = 0.837, and the two Ga atoms at the 2(c) positions. It is a deformed form of the DO19 type close-packed ordered structure. The homogeneity range corresponding to this structure in the Mn-Ga system does not include the ideal composition however, but is displaced to the Ga-rich side.

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