Te Katkısının FeSe-11 Bileşiklerine Etkisi, Üretimi ve Karakterizasyonu

Abstract

In this work, FeTe 0.7 Se 0.3 single crystals have been synthesized by using the self-flux method, in order to understand effect of Te doping in the Fe-chalcogenides. For this purpose, the physical properties of sample have been investigated by Scanning Electron Microscopy (SEM), Energy dispersive x-ray (EDX) spectroscopy, X-ray diffraction (XRD) and magnetic techniques. The XRD results show that the sample has tetragonal structure, with some impurity peaks. SEM results demonstrate that the sample is distributed in a terrace-like formation. EDX results indicate that the distribution of Fe, Te and Se on the surface of the sample is homogenous. According to χ -1 -T measurement, antiferromagnetic interaction is observed. In addition, M-H curves show nearly paramagnetic behavior for the sample measured.