Cryostat insert with the goniometer probe-head mounted at the lower end. Functions and material choices (color coded) are indicated. The shown length is in mm.
Orthogonal cross sections of the goniometer head showing the constructional details. The indicated length is in mm.
Goniometer head showing the two rotation angles. The red lines indicate the reference directions for the angles φ and θ, respectively. The sample platform is fixed at the center of the Al wheel.
Single-crystal 29Si NMR spectra of BaCu2Si2O7 recorded at 20 K (shaded areas) and 200 K (thick red lines) in 10° increments for a rotation about the crystalline c axis.
Single-crystal 31P spectra of BiCu2PO6 recorded at 290 K (a) and at 5 K (b) in 10° increments for rotations about different crystalline axes. Colors reflect the normalized signal intensity, whereas dots show peak maxima. Vertical lines indicate angular positions where selected crystalline axes coincide with the applied magnetic field direction. The continuous lines in the top panel show numerical fits using analytic expressions for the NMR shift assuming a fully field-polarized electronic spin system.
Article metrics loading...
Full text loading...