A ferromagnetic-like phase transition in new oxychalcogenide HgOCuSe

2011/05/30 by G. C. Kim, Kim, G. C., M. Cheon +7 · 1 citation
Materials Science · Physics and Astronomy · #Crystal Structures and Properties #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1105.5868

arxiv created 2011/05/30 · openalex publication_date 2011/05/30 · arxiv updated 2015/03/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report the synthesis of a new oxychalcogenide HgOCuSe sample. The resistivity decreases as a function of T^1.75 with decreasing temperature from room temperature down to around 80 K. There exists a very sharp ferromagnetic-like phase transition at around 60 K under a field of H = 100 Oe. Contrary to the usual ferromagnetic materials, the descending and ascending branches of the magnetic hysteresis curve, at 30 K, are reversed in the whole irreversible field range and the reverse irreversibility decreases at 5 K.

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