Energy and orientation dependence of neutron depolarization in a large single crystal of ferromagnetic holmium

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.364179· OSTI ID:450234

Alfimenkov, V P; Chernikov, A N; Lason, L; Mareev, Y D; Novitsky, V V; Pikelner, L B; Skoy, V R; Tsulaya, M I ^[1]; Gould, C R; Haase, D G ^[2]; Roberson, N R ^[3]

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1. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
2. Physics Department, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States)
3. Physics Department, Duke University, Durham, North Carolina 27708-0305 (United States)

We report measurements of the depolarization of epithermal neutrons (1.7{endash}59 eV) in magnetic domains of a 2.0-cm-diam cylindrical single crystal of ferromagnetic holmium. The neutrons were polarized by a dynamically polarized proton target and polarization analyzed using a statically polarized rare-earth spin filter. Based on the dependence of the depolarization on neutron energy and crystal orientation, we determined the domains to be laminar, or needlelike, with the long axis slightly deflected from the c crystalline axis and having an average width of 59 {mu}m. {copyright} {ital 1997 American Institute of Physics.}

• DOE Contract Number: AC05-76ER01067; FG05-88ER40441
• OSTI ID: 450234
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
DEPOLARIZATION
DOMAIN STRUCTURE
EPITHERMAL NEUTRONS
FERROMAGNETIC MATERIALS
HOLMIUM
MONOCRYSTALS
NEUTRON TRANSPORT
POLARIZED BEAMS