Magnetic wave vector

X-ray scattering studies by Darnell (1963) on the temperature dependence of the lattice constants in the lanthanides, and a truly remarkable series of experiments performed by Keating in 1969 which revealed charge scattering at twice the magnetic wave vector in Ho and ascribed it to the aspherical charge distribution of the /g Hund s rule ground state. 

In addition to the existence of preferred commensurable magnetic wave vectors in Ho, there was a second distinctive feature of the X-ray diffraction patterns that led... 

Rewriting this equation in terms of (s/n) and substituting in eq. (21) for Tm, we can express the spin-slip wave vector Tg in terms of the magnetic wave vector Tm for a magnetic spiral ... 

Fig. 11. Temperature dependence of the magnetic (solid symbols) and spin-slip (open S5fmboIs) wave vectors for two different bulk samples studied by X-ray dif action. The wave vectors of the spin shps broadens considerably and moves to zero when the magnetic wave vector locks to as indicated by the arrow. (From...

In the Sm-like phase, the magnetic wave vectors remained locked to xin... 

Fig. 53. The magnetic wave vector T of Er as a function of temperature for an Er film on Lu substrate (left), for bulk Er (middle), and for an Er film on a Y substrate (right). Small arrows are used to indicate the hysteresis found between measurements done on heating and cooling of the sample. (From Flelgesen...

Fig. 10. Temperature dependence of the magnetic wave vector in erbium (in units of c ). Solid triangles, ambient pressure solid circles, 14kbar (Kawano et al. 1995).

Consider again a monochromatic plane wave of freqnency co with electric and magnetic wave vectors E and H, respectively ... 

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