Single crystal neutron diffraction study of the magnetic structure of TmNi{sub 2}B{sub 2}C

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.365003· OSTI ID:496532

Sternlieb, B ^[1]; Stassis, C; Goldman, A I; Canfield, P ^[2]; Shapiro, S ^[1]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)

Neutron diffraction techniques have been used to study the magnetic structure of single crystals of the magnetic superconductor ({ital T{sub c}}{congruent}11 K) TmNi{sub 2}B{sub 2}C. We find that below approximately 1.5 K the magnetic moments order in an incommensurate spin wave with propagation vector {bold q}{ital {sub m}=q{sub m}}({bold a}{sup {asterisk}}+{bold b}{sup {asterisk}}) [or {bold q}{ital {sub m}=q{sub m}}({bold a}{sup {asterisk}}{minus}{bold b}{sup {asterisk}})] with {ital q{sub m}}=0.094{plus_minus}0.001. The spin wave is transverse with the moments aligned along the {ital c} axis, and the observation of relatively intense higher-order harmonics shows that the modulation is not purely sinusoidal but considerably squared. This incommensurate magnetic structure, which coexists with superconductivity below {ital T{sub N}}{congruent}1.5 K, is quite different from those observed in the magnetic superconductors HoNi{sub 2}B{sub 2}C and ErNi{sub 2}B{sub 2}C. The origin of diffraction peaks observed in scans parallel to {bold a}{sup {asterisk}} is briefly discussed. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 496532
• Report Number(s): CONF-961141--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMES LABORATORY
BNL
BORIDES
BORON ALLOYS
CARBIDES
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MONOCRYSTALS
NEUTRON DIFFRACTION
NICKEL ALLOYS
NICKEL COMPOUNDS
SPIN WAVES
SUPERCONDUCTIVITY
THULIUM ALLOYS
THULIUM COMPOUNDS