Phase diagram, magnetic properties and specific heat of Mn 1− x Fe x PS 3

• Published in: Journal of alloys and compounds Vol. 460; no. 1; pp. 668 - 674
• Main Authors: Masubuchi, Toshihiro, Hoya, Hisanobu, Watanabe, Tadataka, Takahashi, Yumiko, Ban, Shuichi, Ohkubo, Naoki, Takase, Kouichi, Takano, Yoshiki
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2008
• Subjects: Layered compound; Magnetic properties; Reentrant spin glass; Specific heat; Spin frustration; Spin glass; Specific heat; Spin frustration; Reentrant spin glass; Layered compound; Spin glass; Magnetic properties
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2007.06.063

We have investigated the magnetism and the specific heat of transition metal phosphorous trisulfide Mn 1− x Fe x PS 3 and determined the magnetic phase diagram. A spin glass state appears in the range 0.5 ≤ x ≤ 0.6 . The remarkable feature of this spin glass phase is that the spin freezing is not suppressed up to a rather high magnetic field. Reentrant spin glass states appear in the ranges 0.3 ≤ x ≤ 0.45 and 0.6 < x ≤ 0.7; antiferrmomagnetic ordered states appear in the ranges 0.0 ≤ x ≤ 0.2 and 0.8 ≤ x ≤ 1.0 . The temperature dependence of the magnetization of the antiferromagnets except x = 0.0 and 1.0 does not approach zero at 0 K. The molar specific heat of Mn 1− x Fe x PS 3 below 4 K is larger than that of x = 0.0 and 1.0. These results strongly suggest that the spin fluctuation exists in Mn 1− x Fe x PS 3 even in the antiferromagnetic ordered state.