Journal
PHYSICAL REVIEW LETTERS
Volume 88, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.88.257203
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We report on the discovery of a room-temperature ferromagnetic semiconductor in chalcopyrite (Zn1-xMn,)GeP2 with T-c = 312 K. We have also observed that, at temperatures below 47 K, samples for x = 0.056 and 0.2 show a transition to the antiferromagnetic (AFM) state, so that ferromagnetism is well defined to be present between 47 and 312 K. The observation that the AFM phase is most stable at low temperatures is consistent with the predictions of full-potential linearized augmented plane wave total energy calculations and has consequences for other chalcopyrite materials.
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