New Insight into the Vibrational Behavior of Nickel Hydroxide and Oxyhydroxide Using Inelastic Neutron Scattering, Far/Mid-Infrared and Raman Spectroscopies

2008 ◽  
Vol 112 (6) ◽  
pp. 2193-2201 ◽  
Author(s):  
J. L. Bantignies ◽  
S. Deabate ◽  
A. Righi ◽  
S. Rols ◽  
P. Hermet ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Nickel Hydroxide ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Mid Infrared ◽  
Vibrational Behavior ◽  
Insight Into

scholarly journals New Insights about CuO Nanoparticles from Inelastic Neutron Scattering

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 312 ◽  
Author(s):  
Elinor Spencer ◽  
Alexander Kolesnikov ◽  
Brian Woodfield ◽  
Nancy Ross
Keyword(s):  
Particle Size ◽  
Neutron Scattering ◽  
Short Range ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Cuo Nanoparticles ◽  
Spin Correlations ◽  
Size Dependent ◽  
Dynamic Spin ◽  
Insight Into

Inelastic Neutron Scattering (INS) spectroscopy has provided a unique insight into the magnetodymanics of nanoscale copper (II) oxide (CuO). We present evidence for the propagation of magnons in the directions of the ordering vectors of both the commensurate and helically modulated incommensurate antiferromagnetic phases of CuO. The temperature dependency of the magnon spin-wave intensity (in the accessible energy-range of the experiment) conforms to the Bose population of states at low temperatures (T ≤ 100 K), as expected for bosons, then intensity significantly increases, with maximum at about 225 K (close to TN), and decreases at higher temperatures. The obtained results can be related to gradual softening of the dispersion curves of magnon spin-waves and decreasing the spin gap with temperature approaching TN on heating, and slow dissipation of the short-range dynamic spin correlations at higher temperatures. However, the intensity of the magnon signal was found to be particle size dependent, and increases with decreasing particle size. This “reverse size effect” is believed to be related to either creation of single-domain particles at the nanoscale, or “superferromagnetism effect” and the formation of collective particle states.

Anomalous vibrational modes in acetanilide as studied by inelastic neutron scattering

1992 ◽  
Vol 2 (10) ◽  
pp. 1929-1939 ◽  
Author(s):  
Mariette Barthes ◽  
Juegen Eckert ◽  
Susanna W. Johnson ◽  
Jacques Moret ◽  
Basil I. Swanson ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Vibrational Modes

Inelastic neutron scattering study of icosahedral AlFeCu quasicrystal

1992 ◽  
Vol 2 (2) ◽  
pp. 125-130 ◽  
Author(s):  
M. Quilichini ◽  
B. Hennion ◽  
G. Heger ◽  
S. Lefebvre ◽  
A. Quivy
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Scattering Study ◽  
Neutron Scattering Study

INELASTIC NEUTRON SCATTERING ON THE SPIN GLASS : PdMn 10 - at. %

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-918-C6-919 ◽  
Author(s):  
B. H. Verbeek ◽  
C. Van Dijk ◽  
C. J. Nieuwenhuys ◽  
J. A. Mydosh
Keyword(s):  
Neutron Scattering ◽  
Spin Glass ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron
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