Journal article
Texture determination of the high temperature superconductors by emission Mössbauer spectroscopy
Review of scientific instruments, v 64(4), pp 1044-1048
Apr 1993
Abstract
A method using emission Mössbauer spectroscopy has been developed for determining the degree of texture of bulk samples of high temperature superconducting ceramics having axial type of texture. A special fitting procedure was used, which takes into account properties of the electric field gradient on the 57Co probe nucleus, based on expressions determining the probabilities of the quadrupole transitions assuming perfectly aligned crystallites [P. Boolchand et
al., Phys. Rev. B 38, 11313 (1988)]. The deviation of the line intensity ratio of the measured spectrum from the value expected for 100% texture was taken into account by a reduction factor which is associated with the imperfectness of alignment [F. Hartmann‐Boutron and V. Gross, Physica C 172, 267 (1990)]. This factor can be used as a precise measure of c‐axis orientation regardless of the specific kind of orientation distribution of crystallites. The established correlation between the experimental value of the reduction factor and the characteristic parameters of different distribution functions permits us to compare the results of the texture determination by emission Mössbauer spectroscopy with those obtained from x‐ray or neutron diffraction measurements. The high degree of reproducibility of the experimentally determined texture attests to use of this relatively simple, convenient, and accurate technique for texture characterization of the high temperature superconductor ceramics.
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Details
- Title
- Texture determination of the high temperature superconductors by emission Mössbauer spectroscopy
- Creators
- Vladimir Chechersky - Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104Nikolai Kopelev - Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104Jing Tian - Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104Yen Wei - Department of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104Amar Nath - Drexel University
- Publication Details
- Review of scientific instruments, v 64(4), pp 1044-1048
- Publisher
- American Institute of Physics (AIP)
- Number of pages
- 5
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:A1993KX40100034
- Scopus ID
- 2-s2.0-0039576415
- Other Identifier
- 991019173651704721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Instruments & Instrumentation
- Physics, Applied