Determination of Possible Maximum Critical Transition Temperatures with Empirical Model Depending on Structural Disorders-Defects for $Bi_{2.1}Sr_{2.0}Ca_{1.1}Cu_{2.0}O_y$ System

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dc.contributor.authorErdem, Ümit
dc.contributor.authorYıldırım, Gürcan
dc.date.accessioned2025-01-21T16:11:26Z
dc.date.available2025-01-21T16:11:26Z
dc.date.issued2021
dc.departmentKırıkkale Üniversitesi
dc.description.abstractIn this study, we find a strong link depending on the preparation annealing ambient conditions between structural disorders-defects and characteristic transition temperature parameters $(offset, T_c ^{offset} and onset, T_c ^{offset})$ of bulk $Bi_{2.1}Sr_{2.0}Ca_{1.1}Cu_{2.0}O_y$ system for the first time. The superconducting samples are prepared at various annealing temperatures intervals 830°C -850°C with the temperature step of 10°C for annealing time ranging between 24 h and 48 h via traditional solid-state reaction route. The temperature-dependent resistivity measurements are conducted at temperature range of 30-140 K. The most ideal annealing ambient is obtained to be the combination of annealing temperature of 840 °C and annealing time of 24 h because of the enhancement in the formation possibility of strong cooper-pairs and optimization of itinerant charge carrier concentrations in the valence band. Similarly, the positive contributions are observed in the overlapping mechanism of wave functions between Cu-3d and O-2p electrons and especially logarithmic distribution of electronic state densities. The optimum annealing ambient makes the Bi-2212 system refine the structural problems and especially connectivity between the grains in the crystal structure. Conversely, the excess annealing ambient leads to increase considerably the grain misorientation, defects and grain boundary couplings due to the induced permanent problems in the crystal system. The highest correlated model shows that the Bi-2212 superconducting compounds with the minimum structural disorders in the short-range-ordered antiferromagnetic $Cu-O_2$ layers exhibit the maximum $T_c ^{offset} and T_c ^{offset}$ values of about 85.347 K (R2adj=0.9882) and 87.421 K (R2adj=0.97465).
dc.identifier.endpage402
dc.identifier.issn2147-3129
dc.identifier.issn2147-3188
dc.identifier.issue2
dc.identifier.startpage393
dc.identifier.trdizinid1113709
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/1113709
dc.identifier.urihttps://hdl.handle.net/20.500.12587/21493
dc.identifier.volume10
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.relation.ispartofBitlis Eren Üniversitesi Fen Bilimleri Dergisi
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241229
dc.subjectFizik
dc.subjectKatı Hal
dc.subjectTermodinamik
dc.subjectFizikokimya
dc.subjectMühendislik
dc.subjectKimya
dc.titleDetermination of Possible Maximum Critical Transition Temperatures with Empirical Model Depending on Structural Disorders-Defects for $Bi_{2.1}Sr_{2.0}Ca_{1.1}Cu_{2.0}O_y$ System
dc.typeArticle

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