Magnetism and the Verwey transition in under pressure
S Klotz, G Steinle-Neumann, T Strässle, J Philippe… - Physical Review B …, 2008 - APS
S Klotz, G Steinle-Neumann, T Strässle, J Philippe, T Hansen, MJ Wenzel
Physical Review B—Condensed Matter and Materials Physics, 2008•APSWe have used high precision neutron diffraction and ab initio calculations to investigate the
behavior of the magnetism of spinel magnetite (Fe 3 O 4) under pressure in the 0–10 GPa
range and at temperatures of 130–300 K. We find a significant but continuous decrease of
the magnetic moments at both the A and B sites to at least 10 GPa, as well as an absence of
any detectable pressure dependence of the oxygen atomic parameter. The data indicate a
very weak dependence of the saturation moment on pressure and temperature and rule out …
behavior of the magnetism of spinel magnetite (Fe 3 O 4) under pressure in the 0–10 GPa
range and at temperatures of 130–300 K. We find a significant but continuous decrease of
the magnetic moments at both the A and B sites to at least 10 GPa, as well as an absence of
any detectable pressure dependence of the oxygen atomic parameter. The data indicate a
very weak dependence of the saturation moment on pressure and temperature and rule out …
We have used high precision neutron diffraction and ab initio calculations to investigate the behavior of the magnetism of spinel magnetite under pressure in the range and at temperatures of . We find a significant but continuous decrease of the magnetic moments at both the and sites to at least , as well as an absence of any detectable pressure dependence of the oxygen atomic parameter. The data indicate a very weak dependence of the saturation moment on pressure and temperature and rule out unambiguously a transition from inverse to normal spinel in the range investigated. Consequently, charge ordering cannot be precluded as the origin of the Verwey transition under pressure.
American Physical Society以上显示的是最相近的搜索结果。 查看全部搜索结果