Inelastic Neutron Scattering Study of the magneto-structural/volume couplings in MnCoGe compounds

MnCo1-xNixGe-based compounds exhibit several interesting magneto-responsive behaviors, such as magnetic-field adjustable negative thermal expansion, enhanced magnetocaloric effect and anisotropic magneto-volume effects. In this proposal, we plan to measure both the phonon and magnon spectra across the magnetic/structural transitions. These information is helpful for us to understand the microscopic dynamic structures and their responses to the phase transitions.MnCo₁₋ₓNiₓGe基化合物展现出多种引人关注的磁响应行为，例如磁场可调负热膨胀、增强磁热效应与各向异性磁体积效应。在本研究提案中，我们计划测量磁/结构相变过程中的声子（phonon）与磁振子（magnon）能谱。这些信息将有助于我们理解微观动态结构及其对相变的响应。