High-pressure neutron diffraction study of Pd 3 Fe

Christopher J. Ridley*, Craig L. Bull, Nicholas P. Funnell, Silvia C. Capelli, Pascal Manuel, Dmitry D. Khalyavin, Christopher D. O'Neill, Konstantin V. Kamenev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

High-pressure neutron diffraction data from powder and single-crystal samples of atomically disordered (F m 3 m) and ordered (P m 3 m) Pd 3 Fe 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.

Original languageEnglish
Article number015901
JournalJournal of applied physics
Volume125
Issue number1
Early online date2 Jan 2019
DOIs
Publication statusPublished - 7 Jan 2019

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