We have investigated the temperature‐dependence of the magnetic moment of Cr3P, Mn3P, Fe3P and Ni3P including solid solutions of these compounds with each other. These measurements indicate Ni3P and Cr3P have a temperature‐independent Pauli‐type paramagnetism. Mn3P is antiferromagnetic (TN≈115°K) with a moment of 1.68 μB for Mn based on the high‐temperature susceptibility. Solid solutions of Fe3−xCoxP up to x=0.6 show that Co contributes a moment of 1.6 μB ferromagnetically aligned with the iron. In the Fe3−xNixP system, nickel acts as a diluent for all values of x. Solid solutions of Fe3−xMnxP up to x=1.5 could also be formed; in this case, antiferromagnetic ordering lowers the magnetic moment significantly. The variation of the magnetic moments with composition for the M3P series closely resembles the Slater‐Pauling curve.

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© 1967 The American Institute of Physics.
1967
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