Pub Date : 2015-08-01DOI: 10.1109/RSM.2015.7354976
M. Ertuğrul, G. Aras, U. Hasar, M. T. Yurtcan, E. Sonmez, O. Simsek
Superconducting resonators and filters in the microwave range are being made by thin film technology and used in base stations for wireless communication. The operation of superconducting resonators in perpendicular magnetic fields normally leads to a reduction in the device performance due to energy dissipating by Abrikosov vortices. We fabricated YBCO resonator to eliminate losses due to vortex motion. In order to eliminate vortex induced energy losses for superconducting YBCO resonators, we fabricated YBCO micrositrip resonators with different spatial distributions of nanodecoration by Pd nanodots and micro patterned pinning sites by antidots. In order to provide an engineered surface to get artificial pinning centers in YBCO films, palladium (Pd) nano-islands were decorated on substrate systematically. Systematic effects of Pd additions on the structural and flux pinning properties of YBa2Cu3O7-δ (YBCO) films deposited by Pulsed Laser Deposition (PLD) system have been investigated. The evolution of these nano-islands with processing was studied by atomic force microscopy (AFM). The performance of the surface decorated samples has been qualified by depositing 0.8 μm-thick YBCO films by pulsed laser deposition (PLD). The results demonstrate the strong potential of surface decoration by nano-islands for introducing pinning centers into high temperature superconductor applications.
{"title":"Fabrication of superconducting YBCO microwave microstrip resonators","authors":"M. Ertuğrul, G. Aras, U. Hasar, M. T. Yurtcan, E. Sonmez, O. Simsek","doi":"10.1109/RSM.2015.7354976","DOIUrl":"https://doi.org/10.1109/RSM.2015.7354976","url":null,"abstract":"Superconducting resonators and filters in the microwave range are being made by thin film technology and used in base stations for wireless communication. The operation of superconducting resonators in perpendicular magnetic fields normally leads to a reduction in the device performance due to energy dissipating by Abrikosov vortices. We fabricated YBCO resonator to eliminate losses due to vortex motion. In order to eliminate vortex induced energy losses for superconducting YBCO resonators, we fabricated YBCO micrositrip resonators with different spatial distributions of nanodecoration by Pd nanodots and micro patterned pinning sites by antidots. In order to provide an engineered surface to get artificial pinning centers in YBCO films, palladium (Pd) nano-islands were decorated on substrate systematically. Systematic effects of Pd additions on the structural and flux pinning properties of YBa2Cu3O7-δ (YBCO) films deposited by Pulsed Laser Deposition (PLD) system have been investigated. The evolution of these nano-islands with processing was studied by atomic force microscopy (AFM). The performance of the surface decorated samples has been qualified by depositing 0.8 μm-thick YBCO films by pulsed laser deposition (PLD). The results demonstrate the strong potential of surface decoration by nano-islands for introducing pinning centers into high temperature superconductor applications.","PeriodicalId":6667,"journal":{"name":"2015 IEEE Regional Symposium on Micro and Nanoelectronics (RSM)","volume":"19 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84439619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-01-01DOI: 10.1109/RSM.2015.7355031
E. Gur, A. Baltakesmez, S. Tuzemen, Adem Yenisoy
In this study, gold thin films were grown 5 nm, 10nm, 20nm thicknesses on quartz substrate by thermal evaporation. In order to obtain Au nanoparticle films were annealed 3h and 6h at 600 °C or 800 °C in nitrogen atmosphere. After annealing gold nanoparticles were obtained varying in sizes averaged between 12-230 nm. Absorption in shift between 500nm-750nm has been observed. Au gold nanoparticles were also grown on p-Si substrate. ZnO thin films were grown by electrochemically on both gold nanoparticle/p-Si and reference pSi substrates. Characterizations of the ZnO thin films has shown that the thin films grown on Au nanoparticles has better crystal orientation, bigger grain sizes and higher absorption coefficient and device performance.
{"title":"Improved growth quality of the ZnO thin films on Au nano-particles/p-Si","authors":"E. Gur, A. Baltakesmez, S. Tuzemen, Adem Yenisoy","doi":"10.1109/RSM.2015.7355031","DOIUrl":"https://doi.org/10.1109/RSM.2015.7355031","url":null,"abstract":"In this study, gold thin films were grown 5 nm, 10nm, 20nm thicknesses on quartz substrate by thermal evaporation. In order to obtain Au nanoparticle films were annealed 3h and 6h at 600 °C or 800 °C in nitrogen atmosphere. After annealing gold nanoparticles were obtained varying in sizes averaged between 12-230 nm. Absorption in shift between 500nm-750nm has been observed. Au gold nanoparticles were also grown on p-Si substrate. ZnO thin films were grown by electrochemically on both gold nanoparticle/p-Si and reference pSi substrates. Characterizations of the ZnO thin films has shown that the thin films grown on Au nanoparticles has better crystal orientation, bigger grain sizes and higher absorption coefficient and device performance.","PeriodicalId":6667,"journal":{"name":"2015 IEEE Regional Symposium on Micro and Nanoelectronics (RSM)","volume":"19 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88781383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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