New Peritectoid Reaction Identified at the MnSb Alloy

The tunable Tc region of MnSb alloy (44 - 49 % at. Sb) was analyzed using OM, VSM, DSC, XRD, EDS and XRF characterization techniques. Thermal and magnetic analysis suggests the existence of a non reported irreversible reaction on heating, compatible to a reverse peritectoid transition MnxSb ➔ Mn2Sb + Mnx'Sb.本研究采用光学显微镜（Optical Microscopy, OM）、振动样品磁强计（Vibrating Sample Magnetometry, VSM）、差示扫描量热法（Differential Scanning Calorimetry, DSC）、X射线衍射（X-ray Diffraction, XRD）、能量色散X射线能谱（Energy Dispersive X-ray Spectroscopy, EDS）及X射线荧光光谱法（X-ray Fluorescence, XRF）等表征技术，对锑化锰（MnSb）合金（锑原子占比为44%~49 at.%）的可调居里温度（Tc）区间开展了分析。热分析与磁学分析结果表明，该体系在加热过程中存在一种尚未见报道的不可逆反应，该反应与逆包析转变MnₓSb → Mn₂Sb + Mnₓ'Sb相契合。