Single crystal synthesis, crystal structure and physical properties of CrGe1-xSe3+y

Chromium based layered magnets have been intensively investigated recently for their applications in low dimensional devices. In this talk, we report on the synthesis and characterization of single crystalline CrGe1-xSe3+y. Crystal synthesis procedure using flux method and detailed physical property characterizations via x-ray diffraction, electron microscopy, magnetization and heat capacity measurements will be presented. CrGe1-xSe3+y is a semiconductor that exhibits a layered structure. Physical property measurements suggest an antiferromagnetic transition at 45-50K. The average oxidation state of Cr will also be discussed in this talk.