Öz
Süperiletken
FeySe1-xTex ince filmleri MgO altlıklar
üzerine Rf püskürtme yöntemi kullanılarak üretildi ve üretim koşullarının ince
filmlerin mikroyapısı üzerindeki farklılıkları incelendi. Bunun yanısıra
üretilen ince filmlerin Te IKβ/IKα
fluorescence şiddet oranları tahripsiz
EDXRF spektroskopisi kullanılarak çalışıldı. FeySe1-xTex
ince filmleri 59,5 keV enerjili
radyoaktif 241-Am kaynağından yayılan
γ-fotonları ile uyarıldı ve 5.9
keV’ta rezülasyonu 150eV olan Ultra-LEGe dedektörü ile veriler tespit edildi.
Elde edilern sonuçlar, vakum ve Ar atmosferi basıncının numunelerin Te şiddet
oranlarınının değişimine sebep olabileceğini gösterdi.
Anahtar Kelimeler
Kaynakça
- [1]. Paglione J., and Greene R.L. High-temperature superconductivity in iron-based materials. Nature Physics 2010; 6, 645.
- [2]. Kamihara Y., et al. Iron-Based Layered Superconductor La[O1-xFx]FeAs (x = 0.05-0.12) with Tc = 26 K. J. Am. Chem. Soc. 2008 :130, 3296.
- [3]. Fang M.H., Pham H.M., Qian B., Liu T.J., Vehstedt E.K., Liu Y., Spinu L., and Mao Z.Q. Superconductivity close to magnetic instability in Fe(Se1−xTex)0.82. Phys Rev. 2008; 8, 224503.
- [4]. Medvedev S., McQueen T.M., Trojan I., Palasyuk T., Eremets M.I., Cava R.J., Naghavi S., Casper F., Ksenofontov V., Wortmann G., and Felser C. Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure. 2009; 8: 630.
- [5]. Moore J. A. and Elsahlli T. Measurement of composition of thin films obtained by sputtering using radioisotope excited X-ray fluorescence. X-ray Spectrom. 1994; 23: 155
- [6]. Bajat J.B., Miskovic-Stankovic V.B., Maksimovic M.D., Drazic D.M. and Zec S. Electrochemical deposition and characterization of Zn-Fe alloys. J. Serb. Chem. Soc. 2004; 69: 807.
- [7]. Wassdahl N. et al., Soft x-ray emission studies of adsorbates Phys. Rev. Lett.1992; 69 812.
- [8]. Guo J.H., Butorin S.M., Wassdahl N., Skytt P. and Nordgren J., Electronic structure of La2-xSrxCuO4 studied by soft-x-ray-fluorescence spectroscopy with tunable excitation. Phys. Rev. B 1994; 49: 1376-80.
- [9]. Butorin S.M, Guo J-H., Wassdahl N., Skytt P., Nordgren J., Ma Y., Ström C., Johansson L-G. and Qvarford M. Physical Review B-Condensed Matter, 1995; Vol. 51, no 17, 11915-11923 p.
- [10]. Söğüt Ö., Bütün H., Karahan I.H., Tırasoğlu E., Apaydın G. Investigation by XRF and XRD of Zn and Fe in Fex Zn1− x thin films. Phys. 2008; Scr. 78, 065701.
- [11]. Speller S, C, Aksoy C, Saydam M, Taylor H, Burnell G, Boothroyd A T and Grovenor C R M, Analysis of FeySe1− xTex thin films grown by radio frequency sputtering Supercond. Sci. Technol. 2011; 24, 075023.
- [12]. Aksoy C., Tıraşoğlu E., Cengiz E., Apaydın G., Saydam M., Aylıkçı V., Aylıkçı N.K. Chemical effects on the L-shell X-ray fluorescence parameters of Ta and W compounds Journal of Electron Spectroscopy and Related Phonemena, 2012; 184, 1-12, pp.556-560.
- [13]. Scofield J.H. Exchange corrections of K x-ray emission rates Phys. Rev. A,1974b; 9: 1041.
Öz
Superconducting
thin films of FeySe1-xTex were grown on to the single crystal MgO substrates by
RF sputtering and the effects of processing conditions on the microstructural
development were investigated. Besides, the fluorescence intensity ratio IKβ/IKα of Te in those films were
examined by using the non-destructive EDXRF spectroscopy. The FeySe1-xTex
were irradiated with γ-photons at 59.5 keV from a 241-Am annular source and
detected using an Ultra-LEGe detector with resolution of 150eV at 5.9 keV.
The results showed that the heat treatment with vacuum and Ar pressure may be
caused the change of the intensity ratios of Te in the thin films.
Anahtar Kelimeler
Kaynakça
- [1]. Paglione J., and Greene R.L. High-temperature superconductivity in iron-based materials. Nature Physics 2010; 6, 645.
- [2]. Kamihara Y., et al. Iron-Based Layered Superconductor La[O1-xFx]FeAs (x = 0.05-0.12) with Tc = 26 K. J. Am. Chem. Soc. 2008 :130, 3296.
- [3]. Fang M.H., Pham H.M., Qian B., Liu T.J., Vehstedt E.K., Liu Y., Spinu L., and Mao Z.Q. Superconductivity close to magnetic instability in Fe(Se1−xTex)0.82. Phys Rev. 2008; 8, 224503.
- [4]. Medvedev S., McQueen T.M., Trojan I., Palasyuk T., Eremets M.I., Cava R.J., Naghavi S., Casper F., Ksenofontov V., Wortmann G., and Felser C. Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure. 2009; 8: 630.
- [5]. Moore J. A. and Elsahlli T. Measurement of composition of thin films obtained by sputtering using radioisotope excited X-ray fluorescence. X-ray Spectrom. 1994; 23: 155
- [6]. Bajat J.B., Miskovic-Stankovic V.B., Maksimovic M.D., Drazic D.M. and Zec S. Electrochemical deposition and characterization of Zn-Fe alloys. J. Serb. Chem. Soc. 2004; 69: 807.
- [7]. Wassdahl N. et al., Soft x-ray emission studies of adsorbates Phys. Rev. Lett.1992; 69 812.
- [8]. Guo J.H., Butorin S.M., Wassdahl N., Skytt P. and Nordgren J., Electronic structure of La2-xSrxCuO4 studied by soft-x-ray-fluorescence spectroscopy with tunable excitation. Phys. Rev. B 1994; 49: 1376-80.
- [9]. Butorin S.M, Guo J-H., Wassdahl N., Skytt P., Nordgren J., Ma Y., Ström C., Johansson L-G. and Qvarford M. Physical Review B-Condensed Matter, 1995; Vol. 51, no 17, 11915-11923 p.
- [10]. Söğüt Ö., Bütün H., Karahan I.H., Tırasoğlu E., Apaydın G. Investigation by XRF and XRD of Zn and Fe in Fex Zn1− x thin films. Phys. 2008; Scr. 78, 065701.
- [11]. Speller S, C, Aksoy C, Saydam M, Taylor H, Burnell G, Boothroyd A T and Grovenor C R M, Analysis of FeySe1− xTex thin films grown by radio frequency sputtering Supercond. Sci. Technol. 2011; 24, 075023.
- [12]. Aksoy C., Tıraşoğlu E., Cengiz E., Apaydın G., Saydam M., Aylıkçı V., Aylıkçı N.K. Chemical effects on the L-shell X-ray fluorescence parameters of Ta and W compounds Journal of Electron Spectroscopy and Related Phonemena, 2012; 184, 1-12, pp.556-560.
- [13]. Scofield J.H. Exchange corrections of K x-ray emission rates Phys. Rev. A,1974b; 9: 1041.
Ayrıntılar
| Bölüm | Engineering Sciences |
|---|---|
| Yazarlar | |
| Yayımlanma Tarihi | 8 Aralık 2017 |
| Gönderilme Tarihi | 21 Eylül 2017 |
| Kabul Tarihi | 4 Ekim 2017 |
| Yayımlandığı Sayı | Yıl 2017 |