22:
116:
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
580:
436:
Sheng, Z. Z.; Hermann, A.M.; El Ali, A.; Almasan, C.; Estrada, J.; Datta, T.; Matson, R.J. (1988). "Superconductivity at 90 K in the Tl-Ba-Cu-O system".
896:
535:
Superconductivity: Its historical Roots and
Development from Mercury to the Ceramic Oxides, by Per Fridtjof Dahl, AIP, New York, 1st ed. 1992,
360:
479:
Sheng, Z. Z.; Hermann, A. M. (1988). "Superconductivity in the rare-earth-free Tl-Ba-Cu-O system above liquid-nitrogen temperature".
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37:
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Copper Oxide
Superconductors:, by Charles P. Poole, Timir Datta, Horacio A. Farach, John Wiley & Sons, 1988,
782:
739:
816:
553:
355:
113:
848:
836:
712:
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627:
140:
The first series of the Tl-based superconductor containing one Tl–O layer has the general formula TlBa
860:
659:
654:
490:
445:
399:
130:
112:(TBCCO-2223) was discovered in Prof. Allen M. Hermann's laboratory in the physics department of the
824:
703:
691:
674:
637:
390:
Sheng, Z. Z.; Hermann A. M. (1988). "Bulk superconductivity at 120 K in the Tl–Ca/Ba–Cu–O system".
21:
721:
632:
589:
506:
415:
762:
682:
536:
524:
461:
746:
498:
481:
453:
407:
41:
921:
494:
449:
403:
214:
layer with the stacking sequence (Tl–O) (Tl–O) (Ba–O) (Cu–O) (Ba–O) (Tl–O) (Tl–O). In Tl
619:
134:
890:
419:
133:
of 127 K, in
Houston, Texas at the World Congress on Superconductivity organized by
510:
118:
230:(Tl-2212), there are two Cu–O layers with a Ca layer in between. Similar to the Tl
122:
457:
266:
layers enclosing Ca layers between each of these. In Tl-based superconductors,
465:
165:, whereas the second series containing two Tl–O layers has a formula of Tl
808:
603:
44:
58:
558:
502:
411:
75:
67:
52:
20:
242:
structure, Tl–O layers are present outside the Ba–O layers. In Tl
562:
801:
738:
612:
596:
129:. Allen Hermann announced his discovery and the
554:Thallium-based high-temperature superconductors
574:
273:is found to increase with the increase in CuO
8:
735:
581:
567:
559:
25:Schematic layered structure of TBCCO-2223.
18:Family of high-temperature superconductors
198: =1, 2 and 3. In the structure of Tl
667:
382:
361:Bismuth strontium calcium copper oxide
342:compound, it decreases after three CuO
36:(pronounced "tibco"), is a family of
7:
431:
429:
121:in the superconductor laboratory of
30:Thallium barium calcium copper oxide
14:
897:High-temperature superconductors
38:high-temperature superconductors
277:layers. However, the value of
262:(Tl-2223), there are three CuO
1:
371:Lanthanum barium copper oxide
127:University of South Carolina
366:Yttrium barium copper oxide
210:(Tl-2201), there is one CuO
938:
458:10.1103/physrevlett.60.937
284:decreases after four CuO
438:Physical Review Letters
356:Cuprate superconductors
40:having the generalized
114:University of Arkansas
26:
24:
917:Copper(II) compounds
131:critical temperature
495:1988Natur.332...55S
450:1988PhRvL..60..937S
404:1988Natur.332..138S
902:Thallium compounds
590:Thallium compounds
137:in February 1988.
27:
912:Calcium compounds
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883:
797:
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740:Organothallium(I)
398:(6160): 138–139.
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907:Barium compounds
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560:
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503:10.1038/332055a0
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42:chemical formula
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597:Neg. ox. states
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489:(6159): 55–58.
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434:
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19:
12:
11:
5:
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826:
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548:External links
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802:Thallium(III)
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119:magnetometer
91:
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33:
29:
28:
15:
613:Thallium(I)
123:Timir Datta
891:Categories
377:References
604:Thallides
466:10037895
420:30690410
350:See also
346:layers.
135:Paul Chu
511:4330505
491:Bibcode
446:Bibcode
400:Bibcode
125:in the
922:Oxides
817:Tl(OH)
539:
527:
509:
482:Nature
464:
418:
392:Nature
869:Tl(CF
849:Tl(CH
837:Tl(NO
730:TBCCO
507:S2CID
416:S2CID
194:with
34:TBCCO
32:, or
873:COO)
853:COO)
675:TlNO
666:TlPF
655:TlCl
638:TlBr
628:TlOH
537:ISBN
525:ISBN
462:PMID
222:CaCu
861:TlF
809:TlH
783:TlC
747:TlC
722:TlI
660:TlF
633:TlI
620:TlN
499:doi
487:332
454:doi
408:doi
396:332
238:CuO
206:CuO
893::
825:Tl
763:Tl
717:Te
713:Tl
704:Tl
696:SO
692:Tl
683:Tl
647:CO
643:Tl
505:.
497:.
485:.
460:.
452:.
442:60
440:.
428:^
414:.
406:.
394:.
340:+4
328:Cu
326:-1
321:Ca
317:Ba
311:+3
299:Cu
297:-1
292:Ca
260:10
254:Cu
250:Ca
246:Ba
234:Ba
218:Ba
202:Ba
192:+4
180:Cu
178:-1
173:Ca
169:Ba
163:+3
151:Cu
149:-1
144:Ca
110:10
104:Cu
100:Ca
96:Ba
92:Tl
89:.
87:+2
68:Cu
65:−1
59:Ca
53:Ba
45:Tl
875:3
871:3
863:3
855:3
851:3
843:3
841:)
839:3
831:3
829:O
827:2
819:3
811:3
789:5
787:H
785:5
777:4
775:O
773:2
771:H
769:3
767:C
765:2
757:2
755:O
753:3
751:H
749:2
724:3
715:2
708:S
706:2
698:4
694:2
687:O
685:2
677:3
668:6
649:3
645:2
622:3
582:e
575:t
568:v
513:.
501::
493::
468:.
456::
448::
422:.
410::
402::
344:2
338:n
336:2
334:O
331:n
324:n
319:2
315:2
309:n
307:2
305:O
302:n
295:n
290:2
286:2
282:c
279:T
275:2
271:c
268:T
264:2
258:O
256:3
252:2
248:2
244:2
240:6
236:2
232:2
228:8
226:O
224:2
220:2
216:2
212:2
208:6
204:2
200:2
196:n
190:n
188:2
186:O
183:n
176:n
171:2
167:2
161:n
159:2
157:O
154:n
147:n
142:2
108:O
106:3
102:2
98:2
94:2
85:m
83:+
81:n
79:2
76:O
72:n
63:n
56:2
49:m
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