Abstract
The temperature dependence of the magnetic Compton profile of Ni [100] was measured for the first time. It was found that there is a significant difference in shape between the MCPs at room temperature and at 640 K. The result shows that the MCP of Ni above the TC (628 K) has much smaller ratio of the magnetic moment of the s, p-like electrons to that of the 3d magnetic electrons than the MCP at room temperature. This indicates that the spin moment of the s, p-like electrons disappears more rapidly than that of the localized moment due to thermal excitations when temperature approaches to the Curie temperature.
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