Series samples MnBi_1-xGd_x (x = 0, 0.04, 0.08, 0.12, and 0.16) were prepared and studied the structure and magnetic properties. The Rietveld refinement results showed that the low-temperature phase MnBi content in these samples is above 78% and the doped atoms occupied the position of Bi in the MnBi crystal structure. The Debye temperature is founding to decrease with increasing doping. The Curie temperature, paramagnetic to ferromagnetic transition temperature, thermal hysteresis, saturation magnetization, and coercive force of the samples change significantly with increasing doping content. Within a temperature range of 300–500 K, a positive coercivity temperature coefficient β existed. This work helps MnBi-Gd as a candidate for high-temperature magnetic material applications and contributes to the development of tailoring magnetic properties.

系列样品MnBi _1-x Gd _x（x = 0、0.04、0.08、0.12和0.16）制备并研究了结构和磁性能。Rietveld精炼结果表明，这些样品中的低温相MnBi含量高于78％，并且掺杂原子占据了MnBi晶体结构中Bi的位置。发现德比温度随着掺杂的增加而降低。样品的居里温度，顺磁性到铁磁性的转变温度，热磁滞，饱和磁化强度和矫顽力随着掺杂含量的增加而显着变化。在300–500 K的温度范围内，矫顽力温度系数β为正。这项工作有助于MnBi-Gd作为高温磁性材料应用的候选材料，并有助于开发定制的磁性。