Defect formation in the intermediate layers of YBa₂Cu₃O₇₋δ superconductors depending on oxygen сontents
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Defect formation in the intermediate layers of YBa₂Cu₃O₇₋δ superconductors depending on oxygen сontents
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| Creator |
Adonkin, V.T.
Gorelov, B.M. Ogenko, V.M. Melnikov, V.S. Kevdina, I.B. Shantorovich, V.P. |
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| Subject |
Surface properties of inorganic materials
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| Description |
In YBa₂Cu₃O₇₋δ superconductors with 0≤δ<0.6 the defect formation in the intermediate layers depending on oxygen content was revealed under γ-irradiation with doses 8-250 kGy. In YBa₂Cu₃O₇ the subthreshold creation of Ba, Cu1, O1 defects, which give rise to lowering of the annihilation rate of positrons and lattice parameter c, disorder of Cu-O chains, dominates. The defect formation is weakened with δ growth. In YBa₂C₃3O₆.₇ superconductor the subthreshold pushing out of atoms occurs at low temperatures and in O1→O5 transitions, while in compounds with δ>0.3 the subthreshold defect formation in the intermediate layers is not observed. The subthreshold defect formation is related to the Coulomb ejection of atoms from the lattice sites in the field of the weakly damped low-frequency collective excitations enhanced by irradiation in YBa₂Cu₃O₇₋δ superconductors with δ≤0.3.
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| Date |
2017-11-20T18:53:15Z
2017-11-20T18:53:15Z 2002 |
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| Type |
Article
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| Identifier |
Defect formation in the intermediate layers of YBa₂Cu₃O₇₋δ superconductors depending on oxygen сontents / V.T. Adonkin, B.M. Gorelov, V.M. Ogenko, V.S. Melnikov, I.B. Kevdina, V.P. Shantorovich // Поверхность. — 2002. — Вип. 7-8. — С. 177-89. — Бібліогр.: 32 назв. — англ.
XXXX-0106 http://dspace.nbuv.gov.ua/handle/123456789/126365 |
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| Language |
en
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| Relation |
Поверхность
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| Publisher |
Інститут хімії поверхні ім. О.О. Чуйка НАН України
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