High-pressure neutron diffraction study of Pd3Fe

High-pressure neutron diffraction data from powder and single-crystal samples of atomically disordered (Fm3¯m) and ordered (Pm3¯m) Pd3Fe were collected up to pressures of 15 GPa, and high-pressure SQUID magnetometry data were collected up to 6 GPa. The data show a subtle decrease in the magnetic mom...

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Bibliographic Details
Published in:Journal of applied physics 2019-01, Vol.125 (1)
Main Authors: Ridley, Christopher J., Bull, Craig L., Funnell, Nicholas P., Capelli, Silvia C., Manuel, Pascal, Khalyavin, Dmitry D., O’Neill, Christopher D., Kamenev, Konstantin V.
Format: Article
Language:English
Subjects:
Applied physics
Bulk modulus
Crystals
Curie temperature
Equations of state
High temperature
Magnetic measurement
Magnetic moments
Neutron diffraction
Neutrons
Pressure
Single crystals
Superconducting quantum interference devices
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Summary:High-pressure neutron diffraction data from powder and single-crystal samples of atomically disordered (Fm3¯m) and ordered (Pm3¯m) Pd3Fe were collected up to pressures of 15 GPa, and high-pressure SQUID magnetometry data were collected up to 6 GPa. The data show a subtle decrease in the magnetic moment with applied pressure, resulting in a transition to a paramagnetic state by approximately 8 GPa at 300 K. Diffraction results have been used to determine the equation of state, resulting in a bulk modulus of 176.78(9) GPa for the disordered powder and 187.96(7) GPa for the ordered single-crystal samples, approximately 20% more compressible than previously reported from X-ray measurements. High-temperature superconducting quantum interference device magnetometry was used to confirm the ambient pressure Curie temperature of the sample (545 K), which was further investigated using high-temperature single-crystal neutron diffraction at ambient pressure.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.5079804