TY - JOUR
T1 - Neutron Scattering Study of ZnCr2Se4 with Screw Spin Structure
AU - Akimitsu, Jun
AU - Siratori, Kiiti
AU - Shirane, Gen
AU - Iizumi, Masashi
AU - Watanabe, Tsuneo
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1978
Y1 - 1978
N2 - Neutron scattering experiments have been carried out on a single crystal and powdered specimens of ZnCr2Se4, a helimagnet, above and below the transition at TN=21.2 K. Below TN, crystal belongs to D194h. Atomic parameters of Se can be expressed by a single parameter, «=0.3847. Rather small magnetic moment (1.71 μB at 0 K) and the linear dependence of the length of the screw vector, Q0, on the lattice deformation were observed. Anisotropic critical scattering (Jx/Jy≅3) was measured around (4 — Q0, 0, 0) above TN and Q dependence of the exchange interaction constant, J(Q), near Q0 was discussed. Recent studies by Plumier et al. were critically referred.
AB - Neutron scattering experiments have been carried out on a single crystal and powdered specimens of ZnCr2Se4, a helimagnet, above and below the transition at TN=21.2 K. Below TN, crystal belongs to D194h. Atomic parameters of Se can be expressed by a single parameter, «=0.3847. Rather small magnetic moment (1.71 μB at 0 K) and the linear dependence of the length of the screw vector, Q0, on the lattice deformation were observed. Anisotropic critical scattering (Jx/Jy≅3) was measured around (4 — Q0, 0, 0) above TN and Q dependence of the exchange interaction constant, J(Q), near Q0 was discussed. Recent studies by Plumier et al. were critically referred.
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U2 - 10.1143/JPSJ.44.172
DO - 10.1143/JPSJ.44.172
M3 - Article
AN - SCOPUS:0001645065
VL - 44
SP - 172
EP - 180
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 1
ER -