This paper emphasizes the fact that valuable information on the dynamics of high-Tc superconductors is concealed in that part of the spin-lattice relaxation which arises from quadrupolar interactions. We briefly discuss the problem how to disentangle magnetic and quadrupolar time dependent interactions if both are present, thus leading to multiexponential magnetization recovery laws. We then di...

We derive the "conservation law" for nematic polymers in tensorial form valid for quadrupolar orientational order, in contradistinction to the conservation law in the case of polar orientational order. Due to microscopic differences in the coupling between the orientational field deformations and the density variations for polar and quadrupolar order, we find that the respective order parameter...

Introduction Na MRI has been used for a variety of tissue and organ imaging, including the brain, cartilage, the disc, breast, and kidneys. With the advent of high-field MRI scanners, high-resolution images can be obtained within clinically acceptable scan times. The sodium ions bound to tissues and organs can provide us with an invaluable information on the onset of disorder, such as osteoarth...

The impact of spherical symmetry breaking and crystallinity on the response of the vibrational acoustic modes of a nanoobject in frequency- and time-domain experiments is investigated using the finite-element analysis method. The results show that introduction of shape anisotropy, i.e., evolution from a nanosphere to a nanorod, modifies the periods of the fundamental radial and quadrupolar mode...

With their exceptional optoelectronic features, metal halide perovskites (MHPs) are pushing the next wave of energy-related materials research. Heretofore, most solid-state nuclear magnetic resonance (NMR) investigations have focused on readily accessible nuclei. In contrast, halogen environments been avoided due to challenging quadrupolar nature. Here, we report a rapid 35/37Cl NMR strategy fo...

Methods are described and demonstrated for detecting the coherent evolution of nuclear spin observables in zero magnetic field with the full sensitivity of high field NMR. The principle motivation is to provide a means of obtaining solid state spectra of the magnetic dipole and electric quadrupole interactions of disordered systems without the line broadening associated with random orientation ...

Over the years, solid-state nuclear magnetic resonance (NMR) spectroscopy has become an important tool for materials science, with its local point of view that is highly complementary to the structural information provided by diffraction techniques, electron microscopy, and molecular modeling for example. As compared to other interactions that determine the spectral expression of the local stru...