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Room temperature ferromagnetism in Cr doped chalcopyrite type Cu–Zn–Se compound
Author(s) -
Joseph D. Paul,
Venkateswaran C.
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201026179
Subject(s) - chalcopyrite , tetragonal crystal system , ferromagnetism , doping , materials science , band gap , phase (matter) , diffraction , crystallography , copper , condensed matter physics , metallurgy , chemistry , crystal structure , optoelectronics , optics , physics , organic chemistry
Considering the well‐established CuInSe 2 as a prototype system, a new compound of the chalcopyrite type, by replacing In with Zn, has been attempted by metallurgical method. The X‐ray diffraction pattern of the ordered defect compound Cu 1‐ x Zn 1− y Se 2− δ with the characteristic peaks of a chalcopyrite phase, such as (112), (204) and (312) confirm the tetragonal structure. On doping with ‘Cr’ the band gap blue shifted to 4.09 from 3.4 eV indicating possibility of band gap tailoring. Cu 1− x Zn 1− y Se 2− δ magnetically doped with Cr shows ferromagnetic ordering at room temperature. The results are discussed.