Enhancement in transition temperature and upper critical field of CeO0.8F0.2FeAs by yttrium doping

Prakash, J.; Singh, S. J.; Banerjee, A.; Patnaik, S.; Ganguli, A. K.
December 2009
Applied Physics Letters;12/28/2009, Vol. 95 Issue 26, p262507
Academic Journal
We report significant enhancement in superconducting properties of yttrium substituted Ce1-xYxOFFeAs superconductors. The polycrystalline samples were prepared by two step solid state reaction technique. X-ray diffraction confirmed tetragonal ZrCuSiAs structure with decrease in both a and c lattice parameters on increasing yttrium substitution (with fixed F content). With smaller ion Y in place of Ce, the transition temperature increased by 6 K. Yttrium doping also lead to higher critical fields as well as broader magnetization loops, particularly at elevated temperature.


Related Articles

  • Melting behavior of levitated Y[sub 2]O[sub 3]. Hennet, L.; Thiaudière, D.; Landron, C.; Melin, P.; Price, D. L.; Coutures, J.-P.; Bérar, J.-F.; Saboungi, M.-L. // Applied Physics Letters;10/20/2003, Vol. 83 Issue 16, p3305 

    The yttrium environment in liquid Y[sub 2]O[sub 3] at 2770 K has been measured with anomalous x-ray scattering, aerodynamic levitation, and laser heating. The Y–O coordination of 6–7 and the Y–Y coordination of around 12 imply that the close packing of the high-temperature...

  • Structural phase transition in crystals of the molecular conductor α′-(BDH-TTP)6[Hg(SCN)3][Hg(SCN)4]. Simonov, S.; Zorina, L.; Khasanov, S.; Shibaeva, R.; Canadell, E. // Crystallography Reports;Nov2008, Vol. 53 Issue 6, p1003 

    Single crystals of the organic conductor α′-(BDH-TTP)6[Hg(SCN)3][Hg(SCN)4] are studied by low-temperature X-ray diffraction at 100–300 K. It is shown that, in the temperature range 250–200 K, the compound undergoes a phase transition, which is accompanied by the appearance...

  • Structural and superconducting properties of single-crystal Bi2Sr2Ca n − 1Cu nO2 n + 4 + δ ( n = 1—3) whiskers grown in gas-filled cavities. Golubkov, M.; Gorina, Yu.; Kalyuzhnaya, G.; Rodin, V.; Sentyurina, N.; Stepanov, V.; Chernook, S. // Inorganic Materials;Jun2009, Vol. 45 Issue 6, p671 

    Using growth inside gas-filled cavities in KCl-fluxed melts, we have obtained free-standing phasepure Bi2Sr2Ca n − 1Cu nO2 n + 4 + δ ( n = 1–3) whiskers possessing superconducting properties in the as-grown state. Bi-2212 whiskers have been prepared in a wide range of doping...

  • Lattice strain in epitaxial BaTiO3 thin films. He, Feizhou; Wells, B. O. // Applied Physics Letters;4/10/2006, Vol. 88 Issue 15, p152908 

    We have investigated the out-of-plane lattice strain related to the ferroelectric transitions in epitaxial BaTiO3 (BTO) films using synchrotron x-ray diffraction. Under either compressive strain or tensile strain, there is evidence for two structural phase transitions as a function of...

  • EXAFS/XANES studies of the local structure of amorphous ionic and electronic-ionic conductors. Wasiucionek, M.; Garbarczyk, J.; Bacewicz, R.; Jóźwiak, P.; Nowiński, J. L. // Materials Science (0137-1339);2006, Vol. 24 Issue 1, p181 

    X-ray absorption spectroscopy methods such as EXAFS (Extended X-ray Absorption Fine Structure) and XANES (X-ray Absorption Near Edge Structure) are sophisticated and effective tools for studying the local structure of many solids and liquids. Their use is particularly valuable in the case of...

  • Structure of Nb Films Deposited by Means of Ultra-High Vacuum Cathodic Arc Technique. Nietubyć, R.; Pełka, J.; Sadowski, M. J.; Strzyżewski, P. // AIP Conference Proceedings;3/19/2008, Vol. 993 Issue 1, p415 

    We report the x-ray diffraction studies of the structure of the Ultra High Vacuum Cathodic Arc (UHVCA) deposited Nb/sapphire 0001 films. An influence of deposition conditions on the resulting structure was analyzed by x-ray diffraction measurements performed for a series of samples deposited...

  • Fabrication And Characterization Of Porous And Non-Porous Y2CaBa4Cu7Od Superconductor. Syamsyir, S. A.; Azhan, H.; Yusof, M. S. M.; Razali, W. A. W.; Norazidah, A. W.; Hidayah, H. N.; Hawa, J. S.; Ridzwan, H. J. M. // Advanced Materials Research;2014, Issue 895, following p95 

    These study unveils the comparative properties of Y123 and YCa2Ba4Cu7Oy in terms of their porous and non-porous structure. The materials are optimized and improved by determining the balance factor between calcium doped substance and critical temperature (Tc). Solid state reaction method was...

  • Formation and stability of cellulose-copper-NaOH crystalline complex. Ogawa, Yu; Hidaka, Hitomi; Kimura, Satoshi; Kim, Ung-Jin; Kuga, Shigenori; Wada, Masahisa // Cellulose;Apr2014, Vol. 21 Issue 2, p999 

    We investigated the crystal structure of alkali-celluloses, Na-cellulose IIA and II(Cu), formerly known as Na-cellulose IIB, by synchrotron X-ray diffraction. Na-cellulose IIA, formed from cellulose I by high-concentration NaOH treatment, has a fiber repeat of 15 Ã… and a threefold-like...

  • Application Of Statistical Dynamical X-ray Diffraction Theory To Defective Semiconductor Heterostructures. Shreeman, P. K.; Matyi, R. J. // AIP Conference Proceedings;9/28/2009, Vol. 1173 Issue 1, p385 

    Dynamical X-ray diffraction theory is extensively used to evaluate the structure of single crystal materials, where information on composition and strain can be extracted from high resolution rocking curves. Many critical materials and structures (lattice-mismatched semiconductor...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics