Pressure Effects on Spin Density Wave in Cr Rich Cr–Al, Si, Mn, Fe and Co Alloys

摘要: The effect of pressure on the spin density wave (SDW) state in Cr rich Cr–Al, Si, Mn, Fe and Co alloys has been elucidated by neutron diffraction studies. We found that change SDW vector Q, applying pressure, 1/ Q · Δ / P , is linearly related to decrease T N with increasing all results from Cr–Si, fall a single straight line independent their concentrations. Their magnetic phase diagrams temperature-pressure coordinate system can be alloy diagram employing an empirical rule corresponds electron atom ratio. non transition metal Si impurity act as donor, while Al not interpreted two band nesting model.