Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures
| ISSN: |
1573-7357
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract Differences in the lattice constants of Mo-100 and Mo-92 have been measured by x-ray diffraction, in order to search directly for the volume effect of isotopes in a superconductor. No significant difference in the lattice constanta(Mo-100)−a(Mo-92) could be detected at 290 K, while the differences −0.0014±0.0008 and −0.0029±0.0009 Å were detected at 85.3 and 4.31 K, respectively. These values, and their temperature dependence, are considered to be theoretically reasonable. The exponent α in the isotope effect defined by Tc∝M-α is represented thermodynamically by α=−(∂ lnT c /∂ lnM)−(∂ lnT c /∂ lnV)(d lnV/d lnM). From the results, d lnV/d lnM is found to be −0.033±0.009 at 4.31 K. Then, the second term representing the isotopic volume effect is estimated to be about 0.09, with ∂ lnT c /∂ lnV≃2.81. The observed value of α is 0.33, so that the contribution of the second term, 0.09, is 27% of the value of α. It becomes quite clear that the isotopic volume effect in superconducting Mo should not be neglected.
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| Type of Medium: |
Electronic Resource
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| URL: |
| _version_ | 1798296907103076352 |
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| autor | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. |
| autorsonst | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. |
| book_url | http://dx.doi.org/10.1007/BF00654648 |
| datenlieferant | nat_lic_papers |
| hauptsatz | hsatz_simple |
| identnr | NLM197724949 |
| issn | 1573-7357 |
| journal_name | Journal of low temperature physics |
| materialart | 1 |
| notes | Abstract Differences in the lattice constants of Mo-100 and Mo-92 have been measured by x-ray diffraction, in order to search directly for the volume effect of isotopes in a superconductor. No significant difference in the lattice constanta(Mo-100)−a(Mo-92) could be detected at 290 K, while the differences −0.0014±0.0008 and −0.0029±0.0009 Å were detected at 85.3 and 4.31 K, respectively. These values, and their temperature dependence, are considered to be theoretically reasonable. The exponent α in the isotope effect defined by Tc∝M-α is represented thermodynamically by α=−(∂ lnT c /∂ lnM)−(∂ lnT c /∂ lnV)(d lnV/d lnM). From the results, d lnV/d lnM is found to be −0.033±0.009 at 4.31 K. Then, the second term representing the isotopic volume effect is estimated to be about 0.09, with ∂ lnT c /∂ lnV≃2.81. The observed value of α is 0.33, so that the contribution of the second term, 0.09, is 27% of the value of α. It becomes quite clear that the isotopic volume effect in superconducting Mo should not be neglected. |
| package_name | Springer |
| publikationsjahr_anzeige | 1977 |
| publikationsjahr_facette | 1977 |
| publikationsjahr_intervall | 8024:1975-1979 |
| publikationsjahr_sort | 1977 |
| publisher | Springer |
| reference | 27 (1977), S. 245-258 |
| search_space | articles |
| shingle_author_1 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. |
| shingle_author_2 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. |
| shingle_author_3 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. |
| shingle_author_4 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. |
| shingle_catch_all_1 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures Abstract Differences in the lattice constants of Mo-100 and Mo-92 have been measured by x-ray diffraction, in order to search directly for the volume effect of isotopes in a superconductor. No significant difference in the lattice constanta(Mo-100)−a(Mo-92) could be detected at 290 K, while the differences −0.0014±0.0008 and −0.0029±0.0009 Å were detected at 85.3 and 4.31 K, respectively. These values, and their temperature dependence, are considered to be theoretically reasonable. The exponent α in the isotope effect defined by Tc∝M-α is represented thermodynamically by α=−(∂ lnT c /∂ lnM)−(∂ lnT c /∂ lnV)(d lnV/d lnM). From the results, d lnV/d lnM is found to be −0.033±0.009 at 4.31 K. Then, the second term representing the isotopic volume effect is estimated to be about 0.09, with ∂ lnT c /∂ lnV≃2.81. The observed value of α is 0.33, so that the contribution of the second term, 0.09, is 27% of the value of α. It becomes quite clear that the isotopic volume effect in superconducting Mo should not be neglected. 1573-7357 15737357 Springer |
| shingle_catch_all_2 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures Abstract Differences in the lattice constants of Mo-100 and Mo-92 have been measured by x-ray diffraction, in order to search directly for the volume effect of isotopes in a superconductor. No significant difference in the lattice constanta(Mo-100)−a(Mo-92) could be detected at 290 K, while the differences −0.0014±0.0008 and −0.0029±0.0009 Å were detected at 85.3 and 4.31 K, respectively. These values, and their temperature dependence, are considered to be theoretically reasonable. The exponent α in the isotope effect defined by Tc∝M-α is represented thermodynamically by α=−(∂ lnT c /∂ lnM)−(∂ lnT c /∂ lnV)(d lnV/d lnM). From the results, d lnV/d lnM is found to be −0.033±0.009 at 4.31 K. Then, the second term representing the isotopic volume effect is estimated to be about 0.09, with ∂ lnT c /∂ lnV≃2.81. The observed value of α is 0.33, so that the contribution of the second term, 0.09, is 27% of the value of α. It becomes quite clear that the isotopic volume effect in superconducting Mo should not be neglected. 1573-7357 15737357 Springer |
| shingle_catch_all_3 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures Abstract Differences in the lattice constants of Mo-100 and Mo-92 have been measured by x-ray diffraction, in order to search directly for the volume effect of isotopes in a superconductor. No significant difference in the lattice constanta(Mo-100)−a(Mo-92) could be detected at 290 K, while the differences −0.0014±0.0008 and −0.0029±0.0009 Å were detected at 85.3 and 4.31 K, respectively. These values, and their temperature dependence, are considered to be theoretically reasonable. The exponent α in the isotope effect defined by Tc∝M-α is represented thermodynamically by α=−(∂ lnT c /∂ lnM)−(∂ lnT c /∂ lnV)(d lnV/d lnM). From the results, d lnV/d lnM is found to be −0.033±0.009 at 4.31 K. Then, the second term representing the isotopic volume effect is estimated to be about 0.09, with ∂ lnT c /∂ lnV≃2.81. The observed value of α is 0.33, so that the contribution of the second term, 0.09, is 27% of the value of α. It becomes quite clear that the isotopic volume effect in superconducting Mo should not be neglected. 1573-7357 15737357 Springer |
| shingle_catch_all_4 | Nakajima, T. Fukamachi, T. Terasaki, O. Hosoya, S. Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures Abstract Differences in the lattice constants of Mo-100 and Mo-92 have been measured by x-ray diffraction, in order to search directly for the volume effect of isotopes in a superconductor. No significant difference in the lattice constanta(Mo-100)−a(Mo-92) could be detected at 290 K, while the differences −0.0014±0.0008 and −0.0029±0.0009 Å were detected at 85.3 and 4.31 K, respectively. These values, and their temperature dependence, are considered to be theoretically reasonable. The exponent α in the isotope effect defined by Tc∝M-α is represented thermodynamically by α=−(∂ lnT c /∂ lnM)−(∂ lnT c /∂ lnV)(d lnV/d lnM). From the results, d lnV/d lnM is found to be −0.033±0.009 at 4.31 K. Then, the second term representing the isotopic volume effect is estimated to be about 0.09, with ∂ lnT c /∂ lnV≃2.81. The observed value of α is 0.33, so that the contribution of the second term, 0.09, is 27% of the value of α. It becomes quite clear that the isotopic volume effect in superconducting Mo should not be neglected. 1573-7357 15737357 Springer |
| shingle_title_1 | Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures |
| shingle_title_2 | Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures |
| shingle_title_3 | Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures |
| shingle_title_4 | Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures |
| sigel_instance_filter | dkfz geomar wilbert ipn albert fhp |
| source_archive | Springer Online Journal Archives 1860-2000 |
| timestamp | 2024-05-06T09:59:33.239Z |
| titel | Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures |
| titel_suche | Experimental confirmation of the isotopic volume effect in superconducting molybdenum by means of energy-dispersive x-ray diffration at low temperatures |
| topic | U |
| uid | nat_lic_papers_NLM197724949 |