Temperature dependence of the magnetic Compton profile of ferrimagnetic HoFe2

• Published in: Journal of the Physical Society of Japan Vol. 63; no. 10; pp. 3838 - 3849
• Main Authors: ZUKOWSKI, E, COOPER, M. J, TIMMS, D. N, ARMSTRONG, R, ITOH, F, SAKURAI, H, TANAKA, Y, ITO, M, KAWATA, H, BATESON, R
• Format: Journal Article
• Language: English
• Published: Tokyo Institute of Pure and Applied Physics 01-10-1994; Physical Society of Japan; The Physical Society of Japan
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Ferrimagnetics; Magnetic properties and materials; Metals. Metallurgy; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other interactions of matter with particles and radiation; Physics; Studies of specific magnetic materials; X-ray scattering; Temperature dependence; Holmium base alloys; Magnetization; Theoretical study; Iron alloys; Experimental study; Ferrimagnetic materials; Binary alloys; Magnetic scattering; Rare earth alloys; Compton effect; Synchrotron radiation; Transition element alloys
• ISSN: 0031-9015; 1347-4073
• DOI: 10.1143/JPSJ.63.3838

Circularly polarised synchrotron radiation has been used to measure the spin-dependent magnetic Compton profile of the ferromagnet HoFe2 at six temperatures from 10, K to 300, K. The magnetic Compton profiles have been analysed using appropriate free atom Compton profiles and a free electron Compton profile which has allowed the determination of the individual spin moments on the Ho and Fe sites and the diffuse moment; the last two are, to a first approximation, temperature independent. The Ho moment, which is antiferromagnetically coupled to them, reduces by a factor of two across the temperature range, leading to a spin compensation temperature of 210± 10, K. The experiments were performed with 45.9, keV photons at the KEK ARNE-1 station of the Accumulation Ring.