Face-centered-cubic iron ({γ}-Fe) coherently precipitated in a single crystal of Cu has been studied by neutron diffraction at high pressures up to 0.9 GPa and in the temperature range from about 5 to 110 K. It undergoes antiferromagnetic ordering at 67±{}2 K at ambient pressure. The ordering temperature TN monotonically decreases with increasing pressure following a relation TN(K)=67-12.8p-11.1p² -6.17p³, where p is in units of GPa. The change of TN in {γ}-Fe is discussed in terms of the volume change caused by pressurization or by alloying.
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Onodera et al. (1994) studied this question.
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