Magnetic-Compton-scattering study of spin moments in UFe{sub 2}

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.3239· OSTI ID:528099

Lawson, P K; Cooper, M J; Dixon, M A ^[1]; Timms, D N ^[2]; Zukowski, E ^[3]; Itoh, F; Sakurai, H ^[4]

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1. Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom)
2. Division of Physics, University of Portsmouth, Portsmouth PO1 2DZ (United Kingdom)
3. Institute of Physics, University of Warsaw Branch in Bialystok, 15-424 Bialystok (Poland)
4. Department of Electrical and Electronic Engineering, Gunma University, Kiryu 376 (Japan)

Spin moments were derived from the magnetic-Compton profile of UFe{sub 2}, which was measured using 59.38-keV circularly polarized synchrotron radiation from the Accumulation Ring Source at KEK, Japan. Although the net moment on the uranium site is no more than a tenth of a Bohr magneton, the individual spin and orbital moments, which are coupled antiparallel, are much larger and it is the spin moment that can be determined in magnetic-Compton scattering. The data have been analyzed in terms of the U 5f, Fe 3d and delocalized spin moments. The observed uranium-5f spin moment is less than half (i.e., {lt}0.25{mu}{sub B}) and the diffuse spin moment more than double (i.e., {gt}0.20{mu}{sub B}) those predicted from theory. These values compare favorably with those deduced from neutron measurements of the total magnetization. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 528099
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 6 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPTON EFFECT
FERROMAGNETIC MATERIALS
FERROMAGNETISM
IRON ALLOYS
MAGNETIC MOMENTS
MAGNETIZATION
ORBITS
SPIN
SYNCHROTRON RADIATION
URANIUM ALLOYS