Thallium barium calcium copper oxide, or TBCCO (pronounced "tibco"), is a family of high-temperature superconductors having the generalized chemical formula TlmBa2Can−1CunO2n+m+2. Tl2Ba2Ca2Cu3O10 (TBCCO-2223) was discovered in Prof. Allen M. Hermann's laboratory in the physics department of the University of Arkansas in October 1987 by the post-doctoral researcher Zhengzhi Sheng and Prof. Hermann. The bulk superconductivity in this material was confirmed by observations of magnetic flux expulsion and flux trapping signals (under zero field cooled and field cooled conditions) with a SQUID magnetometer in the superconductor laboratory of Timir Datta in the University of South Carolina. Allen Hermann announced his discovery and the critical temperature of 127 K, in Houston, Texas at the World
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| - Oxyde mixte de baryum, de calcium, de cuivre et de thallium (fr)
- Tlenki talowo-barowo-wapniowo-miedziowe (pl)
- Thallium barium calcium copper oxide (en)
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| - L'oxyde mixte de baryum, de calcium, de cuivre et de thallium (en anglais : Thallium barium calcium copper oxide ou TBCCO, prononcé « tibco ») est une famille de supraconducteurs à haute température ayant la formule chimique généralisée TlmBa2Can-1CunO2n+m+2. (fr)
- Thallium barium calcium copper oxide, or TBCCO (pronounced "tibco"), is a family of high-temperature superconductors having the generalized chemical formula TlmBa2Can−1CunO2n+m+2. Tl2Ba2Ca2Cu3O10 (TBCCO-2223) was discovered in Prof. Allen M. Hermann's laboratory in the physics department of the University of Arkansas in October 1987 by the post-doctoral researcher Zhengzhi Sheng and Prof. Hermann. The bulk superconductivity in this material was confirmed by observations of magnetic flux expulsion and flux trapping signals (under zero field cooled and field cooled conditions) with a SQUID magnetometer in the superconductor laboratory of Timir Datta in the University of South Carolina. Allen Hermann announced his discovery and the critical temperature of 127 K, in Houston, Texas at the World (en)
- Tlenki talowo-barowo-wapniowo-miedziowe (TBCCO - skrót od ang. thallium barium calcium copper oxide, wym. "tibko") - grupa nadprzewodników wysokotemperaturowych o wzorze ogólnym TlmBa2Can−1CunO2n+m+2+δ, gdzie δ oznacza niedobór atomów tlenu niezbędny do nadprzewodzenia. Tlenki TBCCO podobnie jak inne nadprzewodniki miedziowe oznacza się symbolami składającymi się z cyfr oznaczających współczynniki stechiometryczne. Niektóre spośród tlenków TBCCO wykazujących nadprzewodnictwo wraz z ich oznaczeniami zestawiono w tabeli: (pl)
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| - L'oxyde mixte de baryum, de calcium, de cuivre et de thallium (en anglais : Thallium barium calcium copper oxide ou TBCCO, prononcé « tibco ») est une famille de supraconducteurs à haute température ayant la formule chimique généralisée TlmBa2Can-1CunO2n+m+2. Le Tl2Ba2Ca2Cu3O10 (TBCCO-2223) a été découvert dans le laboratoire du professeur Allen Hermann dans le département de physique de l'université de l'Arkansas en octobre 1987 par le chercheur post-doctorant Zhengzhi Sheng et le professeur Hermann. La majeure partie de la supraconductivité dans ce matériau a été confirmée par des observations d'expulsion de flux magnétique et de signaux de piégeage de flux (dans des conditions de refroidissement et de champ nul) avec un magnétomètre SQUID dans le laboratoire supraconducteur de Timir Datta à l'université de Caroline du Sud. Allen Hermann a annoncé sa découverte et la température critique de 127 K, à Houston, Texas, lors du Congrès mondial de la supraconductivité organisé par (en) en février 1988. (fr)
- Thallium barium calcium copper oxide, or TBCCO (pronounced "tibco"), is a family of high-temperature superconductors having the generalized chemical formula TlmBa2Can−1CunO2n+m+2. Tl2Ba2Ca2Cu3O10 (TBCCO-2223) was discovered in Prof. Allen M. Hermann's laboratory in the physics department of the University of Arkansas in October 1987 by the post-doctoral researcher Zhengzhi Sheng and Prof. Hermann. The bulk superconductivity in this material was confirmed by observations of magnetic flux expulsion and flux trapping signals (under zero field cooled and field cooled conditions) with a SQUID magnetometer in the superconductor laboratory of Timir Datta in the University of South Carolina. Allen Hermann announced his discovery and the critical temperature of 127 K, in Houston, Texas at the World Congress on Superconductivity organized by Paul Chu in February 1988. The first series of the Tl-based superconductor containing one Tl–O layer has the general formula TlBa2Can-1CunO2n+3, whereas the second series containing two Tl–O layers has a formula of Tl2Ba2Can-1CunO2n+4 with n =1, 2 and 3. In the structure of Tl2Ba2CuO6 (Tl-2201), there is one CuO2 layer with the stacking sequence (Tl–O) (Tl–O) (Ba–O) (Cu–O) (Ba–O) (Tl–O) (Tl–O). In Tl2Ba2CaCu2O8 (Tl-2212), there are two Cu–O layers with a Ca layer in between. Similar to the Tl2Ba2CuO6 structure, Tl–O layers are present outside the Ba–O layers. In Tl2Ba2Ca2Cu3O10 (Tl-2223), there are three CuO2 layers enclosing Ca layers between each of these. In Tl-based superconductors, Tc is found to increase with the increase in CuO2 layers. However, the value of Tc decreases after four CuO2 layers in TlBa2Can-1CunO2n+3, and in the Tl2Ba2Can-1CunO2n+4 compound, it decreases after three CuO2 layers. (en)
- Tlenki talowo-barowo-wapniowo-miedziowe (TBCCO - skrót od ang. thallium barium calcium copper oxide, wym. "tibko") - grupa nadprzewodników wysokotemperaturowych o wzorze ogólnym TlmBa2Can−1CunO2n+m+2+δ, gdzie δ oznacza niedobór atomów tlenu niezbędny do nadprzewodzenia. Tlenki TBCCO podobnie jak inne nadprzewodniki miedziowe oznacza się symbolami składającymi się z cyfr oznaczających współczynniki stechiometryczne. Niektóre spośród tlenków TBCCO wykazujących nadprzewodnictwo wraz z ich oznaczeniami zestawiono w tabeli: Wykorzystanie nadprzewodników talowych, w szczególności w postaci cienkich warstw, ogranicza wysoka toksyczność talu i jego związków jak również lotność tlenku talu w temperaturze syntezy. (pl)
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