0000000000684563

AUTHOR

Kurt Nørgaard Clausen

showing 2 related works from this author

Inelastic neutron scattering measurements on Nd2Fe14B and Y2Fe14B single crystals

1992

Abstract Inelastic neutron scattering measurements have been carried out on Nd 2 Fe 14 B and Y 2 Fe 14 B single crystals. Temperature dependent acoustic magnon dispersion curves have been found along the high-symmetry directions [0,0,1] and [1,0,0] with a gap at (0,0,2). Soft mode behaviour at spin wave vector q = 0 was observed for Nd 2 Fe 14 B near the spin reorientation temperature. The inelastic scattering intensity decreases steeply for larger q . Therefore, the dispersion curves could be measured until the middle of the Brillouin zone only. The experimental results are discussed in the frame of a classical spin wave model.

Resonant inelastic X-ray scatteringPhysicsQuasielastic scatteringCondensed matter physicsMagnonDynamic structure factorQuasielastic neutron scatteringInelastic scatteringCondensed Matter PhysicsSmall-angle neutron scatteringInelastic neutron scatteringElectronic Optical and Magnetic MaterialsJournal of Magnetism and Magnetic Materials
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The phase diagram and the magnetic structure of nuclear spins in elemental copper below 60 nK

1992

Abstract The phase diagram for nuclear magnetic order is elemental copper and the corresponding ordering vectors were investigated by neutron diffraction at nanokelvin temperatures. The intermediate phase is characterized by an ordering vector (O 2 3 2/3 . This is the first time that this type of order is observed in an fcc antiferromagnet.

Materials scienceMagnetic structureSpinsCondensed matter physicsMagnetic orderNeutron diffractionchemistry.chemical_elementCondensed Matter PhysicsCopperElectronic Optical and Magnetic MaterialschemistryPhase (matter)AntiferromagnetismElectrical and Electronic EngineeringPhase diagramPhysica B: Condensed Matter
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