Inelastic Neutron Scattering on an Mn10 Supertetrahedron: Assessment of Exchange Coupling Constants, Ferromagnetic Spin Waves and an Analogy to the Hückel Method

2011 ◽  
Vol 17 (33) ◽  
pp. 9094-9106 ◽  
Author(s):  
Stefan Stuiber ◽  
Gang Wu ◽  
Joscha Nehrkorn ◽  
Jan Dreiser ◽  
Yanhua Lan ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Exchange Coupling ◽  
Inelastic Neutron Scattering ◽  
Spin Waves ◽  
Inelastic Neutron ◽  
Coupling Constants ◽  
Hückel Method

scholarly journals The investigation of Neutron Scattering In Spin Waves Theory of Ferromagnetic Crystals

2014 ◽  
Vol 8 (4) ◽  
Author(s):  
Azadeh Farzaneh ◽  
Mohammad Reza Abdi ◽  
Khadije Rezaee Ebrahim Saraee
Keyword(s):  
Neutron Scattering ◽  
Spin Wave ◽  
Cross Section ◽  
Inelastic Neutron Scattering ◽  
Spin Waves ◽  
Wave Theory ◽  
Spin Correlation ◽  
Inelastic Neutron ◽  
Magnetic Behaviour ◽  
Spin Interaction

Inelastic neutron scattering, probing the temporal spin-spin correlation at the different microscopic scale, is a powerful technique to study the magnetic behaviour of ferromagnetic crystals. In addition, high penetration power of neutron in samples has made it as a useful way for spin-spin interaction in neutron scattering. Changes in the magnetic cross section in term of different energy transfer and temperatures are calculated for nickel and iron as transition metals in Heisenberg model versus spin wave theory by considering atomic form factor. Finally, the effect of magnetic structure and behaviour of crystal in measuring cross-section shows that increasing temperature results in the Cross-section increase Also, the existence of propagating spin waves below Tc is compared in Ni and Fe in different momentum transfers. The relation of spin wave energy with temperature dependence of nickel has created different behaviour in the changes of cross section rather than iron.

Neutron scattering study of the classical antiferromagnet MnF2: a perfect hands-on neutron scattering teaching courseSpecial issue on Neutron Scattering in Canada.

2010 ◽  
Vol 88 (10) ◽  
pp. 771-797 ◽  
Author(s):  
Z. Yamani ◽  
Z. Tun ◽  
D. H. Ryan
Keyword(s):  
Transition Temperature ◽  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Coupling Constants ◽  
Published Data ◽  
Hands On ◽  
Temperature Dependences ◽  
Scattering Study ◽  
Neutron Scattering Study

We present the classical antiferromagnet MnF2 as a perfect demonstration system for teaching a remarkably wide variety of neutron scattering concepts. The nature of antiferromagnetism and the magnetic Hamiltonian in this classical antiferromagnet are discussed. The transition temperature to the Neel state, the value of magnetic moment in the ordered state, the critical scattering close to the phase transition, spin waves associated with the ordering of the moments, as well as their dispersion and temperature dependences are determined experimentally. Parameters such as the Neel transition temperature and exchange coupling constants obtained from the experiments agree reasonably well with the previously published data. In addition, details of how an inelastic neutron scattering experiment is performed by means of triple-axis spectroscopy are provided.

Investigation of spin waves in single crystal Bi2CuO4 by inelastic neutron scattering

1992 ◽  
Vol 82 (6) ◽  
pp. 443-446 ◽  
Author(s):  
A. Furrer ◽  
P. Fisher ◽  
B. Roessli ◽  
G. Petrakovskii ◽  
K. Sablina ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Single Crystal ◽  
Inelastic Neutron Scattering ◽  
Spin Waves ◽  
Inelastic Neutron

Inelastic neutron scattering study of spin waves in the garnet with a triangular magnetic structure

1999 ◽  
Vol 11 (14) ◽  
pp. 2869-2878 ◽  
Author(s):  
A Gukasov ◽  
V P Plakhty ◽  
B Dorner ◽  
S Yu Kokovin ◽  
V N Syromyatnikov ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Magnetic Structure ◽  
Inelastic Neutron Scattering ◽  
Spin Waves ◽  
Inelastic Neutron ◽  
Scattering Study ◽  
Neutron Scattering Study

Spin Waves in Ferromagnetic CrBr3Studied by Inelastic Neutron Scattering

1971 ◽  
Vol 3 (1) ◽  
pp. 157-166 ◽  
Author(s):  
E. J. Samuelsen ◽  
Richard Silberglitt ◽  
G. Shirane ◽  
J. P. Remeika
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Spin Waves ◽  
Inelastic Neutron
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