Raman spectroscopy of Zn1-xCoxO bulk mixed crystals

K. Grasza , J. Geurts , W. Szuszkiewicz , Jean-François Morhange (1) , M. Schumm , M. Lentze , Z. Golacki , P. Skupinski

1 INSP - Institut des Nanosciences de Paris

We report on a study of structural properties of Zn1-xCoxO by micro- and macro-Raman scattering from phonons. Bulk mixed crystals (x <= 0.03), grown by chemical vapour transport were investigated between 5 K and 295 K. Beside the common eigenmodes of the ZnO host lattice, we observed disorder-induced lattice vibration modes and a structure, tentatively assigned to a local vibration mode of the Co impurity. Our results are compared with literature data of other ZnO-based diluted magnetic semiconductors such as (Zn,Mn)O.

Mots clés: Zn1-xCoxO; Raman scattering; lattice vibrations; diluted magnetic semiconductor

Domaines: Matière Condensée [cond-mat]

K. Grasza, J. Geurts, W. Szuszkiewicz, Jean-François Morhange, M. Schumm, et al.. Raman spectroscopy of Zn1-xCoxO bulk mixed crystals. Materials Science -Wroclaw-, 2008, 26 (4), pp.1045-1052. ⟨hal-01287864⟩