Magnetic field alignment

Tolbert, SH Firouzi, A Stucky, GD Chmelka, BF, Magnetic Field Alignment of Ordered Silicate-Surfactant Composites and Mesoporous Sihca, Science 278, 264, 1997. 

Excited state. Condition where nuclei in a magnetic field have their own magnetic fields aligned so as to oppose the external magnet, i.e., N-N-S-S. Also known as the high-energy state. 

Dust particles appear to become oriented in interstellar magnetic fields, aligning themselves with the field lines to produce preferential absorption of light polarised... 

Each spinning proton carries a magnetic field aligned with T or against l the applied field H T. The same is true for all adjacent protons. Their individual magnetic fields combine to a resultant field. This is called spin-spin coupling. 

Fig. 35 Magnetic field aligned LC molecules show a preferred formation for single enan-tiomorphism on hopg [112]. With the field vector pointing either + 19° or - 19° away from the (1100) directions, either left- or right-handed domains prevail (top and bottom), the vector aligned parallel to the (1100) directions has no effect. Reprinted with permission of Wiley...

FIGURE 1.38 Precession of the magnetization vector in a static magnetic field aligned along the Z-axis. 

The difference in absorbance of left and right circularly polarized incident radiation (MCD), or the extent of the rotation of a beam of plane polarized light (MORD), with the sample located in a magnetic field aligned parallel to the axis of light propagation is observed. 

Fig. 6.10.1. Parallelepiped geometry for current/heat/entropy flux along the x and y directions in the presence of a magnetic field aligned with the z direction.

Tolhert SH, Firouzi A, and Stucky GD. Magnetic field alignment of ordered silicate-surfactant composites and mesoporous silica. Science 1997 278 264-268. 

At the current time in our Galaxy, it appears that star formation takes place in massive interstellar clouds, with dimensions 10 pc, density 5 x 109 atomsm-3, and temperature ss 10 K. The Galaxy is pervaded by a magnetic field aligned approximately parallel to the galactic plane. This magnetic field is strongly tied to the ionized plasma in the interstellar medium. 

Fig. 20-34. The esr spectrum of the [IrCl ]2- ion, obtained with the applied magnetic field aligned along one of the Cl—Ir—Cl axes of the complex ion in a single crystal of Na2PtCI6 6H20 containing 0.5% of IrIV substitutionally replacing PtIv.

Fig. 10.8 Spectra for single crystal Fej04 below the Verwey transition (a) cooled through the transition in zero applied field to 82 K so that c twinning occurs, and polarised by a 2-7-kG field applied transversely (b) cooled in a 9-kG magnetic field aligned along the [100] axis to 82 K and polarised similarly (c) cooled as in (b) but with a longitudinal field of 20-3 kG at 30 K. In all cases the [100] direction was parallel to the applied field. Note the dramatic improvement in resolution when V twinning is eliminated. [Ref. 31, Fig. 1]...

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