Synthesis and physical properties of a new layered ferromagnet, Cr_1.21Te₂

The Cr-Te binary hosts many unexplored magnetic materials. In this talk, we report the single crystal synthesis and physical properties of a new layered Cr-Te binary ferromagnet, Cr_1.21Te₂. Based on single crystal x-ray diffraction measurement, Cr_1.21Te₂ crystalizes in a trigonal structure with a space group P-3. Ferromagnetic transition occurs at ~174 K. Detailed physical property characterization data via temperature- and field-dependent magnetization, zero-field heat capacity and angle-resolved photoemission spectroscopy will be presented. By fitting low temperature magnetization according to the Bloch’s law, Cr_1.21Te₂ exhibits a finite spin excitation gap, which suggest its possible application as a low dimensional ferromagnet.