Using the Mössbauer effect of 155Gd, the quadrupole interaction in GdRh4B4 has been measured, which yields the A02 term in the crystalline electric field Hamiltonian to be 1165 ± 100 K/a.u. Using this, the B02 terms for the other RERh4B4 (RE = Gd to Tm) have been deduced, and the physical properties predicted by the resulting Hamiltonian are compared with the experimental results. 相似文献
This paper deals with new results obtained in regard to the reconstruction properties of side-band Fresnel holograms (SBFH) of self-imaging type objects (for example, gratings) as compared with those of general objects. The major finding is that a distribution I2, which appears on the real-image plane along with the conventional real-image I1, remains a 2Z distribution (where 2Z is the axial distance between the object and its self-imaging plane) under a variety of situations, while its nature and focusing properties differ from one situation to another. It is demonstrated that the two distributions I1 and I2 can be used in the development of a novel technique for image subtraction. 相似文献
2-Dichloracetamido-1-methyl-5-nitroimidazole undergoes novel cycloaddition with diazomethane to form 5-dichloracetylimino-tetrahydroimidazopyrazoles via 2-dichloracetylimino-1,3-dimethyl-5-nitroimidazoline. 相似文献
We report a study of local structure of iron monomers and dimers isolated in a rare gas Ar matrix using extended X-ray absorption fine structure measurements. The results have been compared with Mössbauer measurements on such systems. The interatomic distance found for Fe2 in these measurements is 1.87 ± 0.13 Å. 相似文献
The contact resistivities of Al and Ti ohmic contacts to n-type 3C-SiC were measured using the circular TLM method. The surface
doping concentration under the contact was increased by ion-implantation of nitrogen into SiC. The contact resistivity was
observed to decrease with increasing surface doping concentration for both Al and Ti contacts. The minimum value for the contact
resistivities for Aland Ti contacts was 1.4x 10-5and 1.5 x 10-5 ω cm2, respectively, at the surface doping concentration of 3 x 1020 cm-3 without any annealing of the contacts. These values are an order of magnitude lower than previously reported minimum values
for as-deposited ohmic contacts on n-type 3C-SiC. 相似文献
The reaction of anthranilamide with phosphorus pentasulfide in boiling pyridine leads to the benzodiazaphosphorine-pyridine salt 2 . The structure is established by elemental analysis, 1H- 13C- 15N- 31P-NMR, and mass spectral data. 相似文献
A mathematical model describing interfacial radical polymerization‐based film formation on hydrogels is elucidated. A glucose oxidase‐mediated multistage initiation reaction is used to accomplish interfacial film formation. A polymer concentration‐dependent diffusion coefficient is used to reflect the changing mass transport conditions as the film develops. Model predictions of the film thickness as a function of the species concentrations agree well with experiments. The model predicts that the degree of initiation reaction delocalization with the enzyme‐mediated initiation system is significantly higher than an enzyme‐independent system, thus affecting the film growth rate and structure. The mass transport properties of the film and its adhesion to the underlying substrate are also investigated.