Three-dimensional magnetic critical behavior in CrI3

Article

关键词: CHROMIUM HEXATELLUROSILICATE CR2SI2TE6;    CRITICAL EXPONENTS;    CRYSTAL-STRUCTURE;    FERROMAGNETISM;    NANOSHEETS;    NICKEL;   

DOI  :  10.1103/PhysRevB.97.014420

来源: SCIE

【 摘 要 】

CrI3 is a promising candidate for van der Waals bonded ferromagnetic devices since its ferromagnetism can be maintained upon exfoliating bulk crystals down to a single layer. In this work we studied critical properties of bulk CrI3 single crystals around the paramagnetic to ferromagnetic phase transition. Critical exponents beta = 0.260(4) with a critical temperature T-c = 60.05(13) K and gamma = 1.136(6) with T-c = 60.43(4) K are obtained by the Kouvel-Fisher method, whereas delta = 5.32(2) is obtained by a critical isotherm analysis at T-c = 60 K. The critical exponents determined in bulk CrI3 single crystals suggest a three-dimensional long-range magnetic coupling with the exchange distance decaying as J (r) approximate to r(-4.69).

【 授权许可】

Free