Ru NMR and NQR Studies in CeRu

NMR and NQR study of the electronic and structural properties of Al-Cu-Fe and Al-Cu-Ru quasicrystals.

Analysis of 27 Al - and 93 Nb - NMR spectra of PrNb 2 Al 20 single crystal

We report the results of 27Aland 93Nbnuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements in PrNb2Al20 single crystals. The field angle dependence of the observed 93Nb-NMR lines for the single crystal at around 5 T and at 50K is reproduced by a simulation using previously reported NQR parameters νQ,Nb ≈ 1.82MHz and ηNb ≈ 0, while 27Al-NMR lines were not reproduce...

A Study of High Tc Oxide Superconductors by NQR and NMR Measurements

Since the discovery of high transition temperature (Tc) superconductors [1] many experimental and theoretical studies have been carried out but still the theories are controversial. In the high TC superconductors, magnetism is considered to play an important role. NMR measurements are suitable to investigate both the magnetic and superconducting properties at each atomic site microscopically. I...

Development of Low Frequency Pulsed NQR/NMR Spectrometer

An FPGA based NQR spectrometer has been designed for detection of N nuclei. The digital circuits required for NQR spectrometer i.e Pulse Programmer, DDS, digital receiver have been built inside FPGA. Combining FPGA chip with analog components, NQR spectrometer has been developed. N from NaNO2 is observed using same spectrometer. By adding a permanent magnet of uniform field NMR signal of proton...

Dynamic Behavior of Group 13 Elements in Bromocomplexes as Studied by NQR and NMR

NMR, NQR, powder X-ray diffraction, DTA and AC conductivity were measured in RMBr4 (R = Ag, Cu; M = Al, Ga) and RM2Br7 (R = Li, Ag; M = Al, Ga). In RMBr4, the activation energy of Cu diffusion was evaluated fromCu NMR and was in good agreement with that fromBr NQR. In CuAlBr4, the e Qq/h value of Cu NMR and the value of Al NMR changed linearly with decreasing temperature, although the eQq=h val...