Compton scattering study of 4{ital f} magnetism in CeFe{sub 2}

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.4068· OSTI ID:286692

Cooper, M J; Lawson, P K; Dixon, M A ^[1]; Zukowski, E ^[2]; Timms, D N ^[3]; Itoh, F; Sakurai, H ^[4]; Kawata, H ^[5]; Tanaka, Y ^[6]; Ito, M ^[7]

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1. Department of Physics, University of Warwick, Coventry CV47AL (United Kingdom)
2. Institute of Physics, Warsaw University Branch, ul. Lipowa 41, 15-424 Bialystok (Poland)
3. Division of Physics, University of Portsmouth, Portsmouth PO12DZ (United Kingdom)
4. Department of Electrical and Electronic Engineering, Gunma University, Kiryu 376 (Japan)
5. Photon Factory, National Laboratory for High Energy Physics (KEK), Oho, Tsukuba, Ibaraki 305 (Japan)
6. The Institute for Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-01 (Japan)
7. Faculty of Science, Himeji Institute of Technology, Kanaji 1479-1, Kamigori, Hyogo 678-12 (Japan)

Magnetic Compton scattering, which measures solely the electron spin moment, has been used to provide direct evidence for the low value of the 4{ital f} moment on cerium in the ferrimagnetic compound CeFe{sub 2}. The measurements were performed by using monochromatic, 61.34 keV photons with a high degree of circular polarization produced by an elliptical multipole wiggler at the Accumulation Ring Source, KEK, Japan. Analysis of the Compton profile shows the 4{ital f} spin moment to be antiparallel to the moment on Fe. This is consistent with the 4{ital f} moment as deduced from neutron-diffraction data yet conflicts markedly with the moment predicted in a series of {ital ab} {ital initio} band calculations, being less than half the calculated value of 0.42{mu}{sub {ital B}}. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286692
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 6 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BAND THEORY
CERIUM ALLOYS
COMPTON EFFECT
D STATES
F STATES
FERRIMAGNETISM
IRON BASE ALLOYS
SPIN