Local-Orbital Ordering on Cr[sup 3+] Ions Doped in GaN | Zendy

Satoshi Emura | Zendy; S. Kimura | Zendy; K. Tokuda | Zendy; Yikai Zhou | Zendy; S. Hasegawa | Zendy; H. Asahi | Zendy; Marília Caldas | Zendy; Nélson Studart | Zendy

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Local-Orbital Ordering on Cr[sup 3+] Ions Doped in GaN

Author(s) -

Satoshi Emura,

S. Kimura,

K. Tokuda,

Yikai Zhou,

S. Hasegawa,

H. Asahi,

Marília Caldas,

Nélson Studart

Publication year - 2010

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.3295481

Subject(s) - tetrahedron , ion , materials science , anisotropy , deformation (meteorology) , doping , hexagonal crystal system , absorption edge , linear dichroism , crystallography , absorption (acoustics) , condensed matter physics , enhanced data rates for gsm evolution , k edge , molecular physics , absorption spectroscopy , physics , optics , chemistry , circular dichroism , telecommunications , quantum mechanics , computer science , band gap , composite material

The X‐ray linear dichroism (XLD) at the pre‐peaks of Cr K‐edge, which corresponds to the transition from 1s to 3d orbital, is explicitly observed for cubic GaCrN and hexagonal GaCrN. This observation of XLD in the cubic structure of GaCrN indicates that CrN4 tetrahedron in the local coordination suffers inhomogeneous or anisotropic deformation. This deformation is also confirmed through the analysis of the X‐ray absorption fine structure of Cr K‐edge of the hexagonal GaCrN, indicating the shift of Cr+3 ion along the direction.

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