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Results for DC.creator="Z." AND DC.creator="Su" in section 8.7.4 of volume C page 3 of 4 pages. |
Effect of extinction
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.6, pp. 728-729 [ doi:10.1107/97809553602060000615 ]
Effect of extinction 8.7.4.4.6. Effect of extinction Since most measurements correspond to strong nuclear structure factors, extinction severely affects the observed data. To a first approximation, one may assume that both and will be affected by this process, though the spin-flip processes and are not. If and are the associated ...
Polarized neutron scattering in the noncentrosymmetric case
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.5, p. 728 [ doi:10.1107/97809553602060000615 ]
Polarized neutron scattering in the noncentrosymmetric case 8.7.4.4.5. Polarized neutron scattering in the noncentrosymmetric case If the space group is noncentrosymmetric, both and M have a phase, and , respectively. If for simplicity one assumes [alpha] = [pi]/2, and, defining [delta] = [varphi]M - [varphi]N, which shows that |x| and [delta] cannot ...
Polarized neutron scattering of centrosymmetric crystals
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.4, p. 728 [ doi:10.1107/97809553602060000615 ]
Polarized neutron scattering of centrosymmetric crystals 8.7.4.4.4. Polarized neutron scattering of centrosymmetric crystals If is assumed to be in the vertical Oz direction, M(h) will in most situations be aligned along Oz by an external orienting field. If [alpha] is the angle between M and h, and with expressed in ...
Polarized neutron scattering
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.3, p. 728 [ doi:10.1107/97809553602060000615 ]
Polarized neutron scattering 8.7.4.4.3. Polarized neutron scattering It is generally possible to polarize the incident beam by using as a monochromator a ferromagnetic alloy, for which at a given Bragg angle , because of a cancellation of nuclear and magnetic scattering components. The scattered-beam intensity is thus . By using a ...
Unpolarized neutron scattering
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.2, p. 728 [ doi:10.1107/97809553602060000615 ]
Unpolarized neutron scattering 8.7.4.4.2. Unpolarized neutron scattering If the incident neutron beam is not polarized, the scattering cross section is given by Magnetic and nuclear contributions are simply additive. With , one obtains Owing to its definition, |x| can be of the order of 1 if and only if the atomic moments ...
Introduction
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.1, pp. 727-728 [ doi:10.1107/97809553602060000615 ]
Introduction 8.7.4.4.1. Introduction The magnetic structure factor [equation (8.7.4.4)] depends on the spin state of the neutron. Let [lambda] be the unit vector defining a quantization axis for the neutron, which can be either parallel or antiparallel to . If stands for the cross section where the incident neutron has the ...
Probing spin densities by neutron elastic scattering
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4, pp. 727-729 [ doi:10.1107/97809553602060000615 ]
Probing spin densities by neutron elastic scattering 8.7.4.4. Probing spin densities by neutron elastic scattering 8.7.4.4.1. Introduction | | The magnetic structure factor [equation (8.7.4.4)] depends on the spin state of the neutron. Let [lambda] be the unit vector defining a quantization axis for the neutron, which can be either parallel or antiparallel ...
Orbital magnetization density
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.3.4, p. 727 [ doi:10.1107/97809553602060000615 ]
Orbital magnetization density 8.7.4.3.4. Orbital magnetization density We must now address the case where the orbital moment is not quenched. In that case, there is some spin-orbit coupling, and the description of the magnetization density becomes less straightforward. The magnetic moment due to the angular momentum of the electron is ...
Spin density for an assembly of localized systems
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.3.3, p. 727 [ doi:10.1107/97809553602060000615 ]
Spin density for an assembly of localized systems 8.7.4.3.3. Spin density for an assembly of localized systems A complex magnetic system can generally be described as an ensemble of well defined interacting open-shell subsystems (ions or radicals), where each subsystem has a spin , and is assumed to be a good ...
Thermally averaged spin-only magnetization density
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.3.2, pp. 726-727 [ doi:10.1107/97809553602060000615 ]
Thermally averaged spin-only magnetization density 8.7.4.3.2. Thermally averaged spin-only magnetization density The system is now assumed to be at a given temperature T. S remains a good quantum number, but all states are now populated according to Boltzmann statistics. We are interested in the thermal equilibrium spin-magnetization density ...
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.6, pp. 728-729 [ doi:10.1107/97809553602060000615 ]
Effect of extinction 8.7.4.4.6. Effect of extinction Since most measurements correspond to strong nuclear structure factors, extinction severely affects the observed data. To a first approximation, one may assume that both and will be affected by this process, though the spin-flip processes and are not. If and are the associated ...
Polarized neutron scattering in the noncentrosymmetric case
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.5, p. 728 [ doi:10.1107/97809553602060000615 ]
Polarized neutron scattering in the noncentrosymmetric case 8.7.4.4.5. Polarized neutron scattering in the noncentrosymmetric case If the space group is noncentrosymmetric, both and M have a phase, and , respectively. If for simplicity one assumes [alpha] = [pi]/2, and, defining [delta] = [varphi]M - [varphi]N, which shows that |x| and [delta] cannot ...
Polarized neutron scattering of centrosymmetric crystals
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.4, p. 728 [ doi:10.1107/97809553602060000615 ]
Polarized neutron scattering of centrosymmetric crystals 8.7.4.4.4. Polarized neutron scattering of centrosymmetric crystals If is assumed to be in the vertical Oz direction, M(h) will in most situations be aligned along Oz by an external orienting field. If [alpha] is the angle between M and h, and with expressed in ...
Polarized neutron scattering
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.3, p. 728 [ doi:10.1107/97809553602060000615 ]
Polarized neutron scattering 8.7.4.4.3. Polarized neutron scattering It is generally possible to polarize the incident beam by using as a monochromator a ferromagnetic alloy, for which at a given Bragg angle , because of a cancellation of nuclear and magnetic scattering components. The scattered-beam intensity is thus . By using a ...
Unpolarized neutron scattering
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.2, p. 728 [ doi:10.1107/97809553602060000615 ]
Unpolarized neutron scattering 8.7.4.4.2. Unpolarized neutron scattering If the incident neutron beam is not polarized, the scattering cross section is given by Magnetic and nuclear contributions are simply additive. With , one obtains Owing to its definition, |x| can be of the order of 1 if and only if the atomic moments ...
Introduction
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4.1, pp. 727-728 [ doi:10.1107/97809553602060000615 ]
Introduction 8.7.4.4.1. Introduction The magnetic structure factor [equation (8.7.4.4)] depends on the spin state of the neutron. Let [lambda] be the unit vector defining a quantization axis for the neutron, which can be either parallel or antiparallel to . If stands for the cross section where the incident neutron has the ...
Probing spin densities by neutron elastic scattering
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.4, pp. 727-729 [ doi:10.1107/97809553602060000615 ]
Probing spin densities by neutron elastic scattering 8.7.4.4. Probing spin densities by neutron elastic scattering 8.7.4.4.1. Introduction | | The magnetic structure factor [equation (8.7.4.4)] depends on the spin state of the neutron. Let [lambda] be the unit vector defining a quantization axis for the neutron, which can be either parallel or antiparallel ...
Orbital magnetization density
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.3.4, p. 727 [ doi:10.1107/97809553602060000615 ]
Orbital magnetization density 8.7.4.3.4. Orbital magnetization density We must now address the case where the orbital moment is not quenched. In that case, there is some spin-orbit coupling, and the description of the magnetization density becomes less straightforward. The magnetic moment due to the angular momentum of the electron is ...
Spin density for an assembly of localized systems
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.3.3, p. 727 [ doi:10.1107/97809553602060000615 ]
Spin density for an assembly of localized systems 8.7.4.3.3. Spin density for an assembly of localized systems A complex magnetic system can generally be described as an ensemble of well defined interacting open-shell subsystems (ions or radicals), where each subsystem has a spin , and is assumed to be a good ...
Thermally averaged spin-only magnetization density
International Tables for Crystallography (2006). Vol. C, Section 8.7.4.3.2, pp. 726-727 [ doi:10.1107/97809553602060000615 ]
Thermally averaged spin-only magnetization density 8.7.4.3.2. Thermally averaged spin-only magnetization density The system is now assumed to be at a given temperature T. S remains a good quantum number, but all states are now populated according to Boltzmann statistics. We are interested in the thermal equilibrium spin-magnetization density ...
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