TITLE

Strong vortex pinning in Co-doped BaFe2As2 single crystal thin films

AUTHOR(S)
Tarantini, C.; Lee, S.; Zhang, Y.; Jiang, J.; Bark, C. W.; Weiss, J. D.; Polyanskii, A.; Nelson, C. T.; Jang, H. W.; Folkman, C. M.; Baek, S. H.; Pan, X. Q.; Gurevich, A.; Hellstrom, E. E.; Eom, C. B.; Larbalestier, D. C.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p142510
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the field and angular dependences of Jc of truly epitaxial Co-doped BaFe2As2 thin films grown on SrTiO3/(La,Sr)(Al,Ta)O3 with different SrTiO3 template thicknesses. The films show Jc comparable to single crystals and a maximum pinning force Fp(0.6Tc)>5 GN/m3 at H/Hirr∼0.5 indicative of strong high-field vortex pinning. Due to the strong correlated c-axis pinning, Jc for field along the c-axis exceeds Jc for H∥ab plane, inverting the expectation of the Hc2 anisotropy. High resolution transmission electron microscopy reveals that the strong vortex pinning is due to a high density of nanosize columnar defects.
ACCESSION #
49071212

 

Related Articles

  • Single-crystal barium titanate thin films by ion slicing. Izuhara, T.; Gheorma, I.-L.; Osgood, R. M.; Roy, A. N.; Bakhru, H.; Tesfu, Yiheli M.; Reeves, M. E. // Applied Physics Letters;1/27/2003, Vol. 82 Issue 4, p616 

    Thin barium titanate films, 0.5-8 µm thick, are obtained from a single-crystal bulk sample using ion slicing. The process, based on ion implantation and anodic bonding, separates thin films having areas of ∼1 × 1 cm², from bulk crystals. The quality of the film is characterized by...

  • Substrate-free crystallization of distorted hexagonal barium titanate thin films. Stavitski, N.; Lyahovitskaya, V.; Nair, J.; Zon, I.; Popovitz-Biro, R.; Wachtel, E.; Feldman, Y.; Lubomirsky, I. // Applied Physics Letters;11/25/2002, Vol. 81 Issue 22, p4177 

    We show that substrate-free crystallized barium titanate (BaTiO[SUB3]) films adopt a hexagonal structure, whereas substrate-supported films assume the commonly observed tetragonal phase. However, in contrast to the known hexagonal BaTiO[SUB3], the substrate-free crystallized films demonstrate a...

  • Influence of Ba content on grain size and dynamics of crystallization in barium ferrite thin films. Chen, Yingjian; Laughlin, David E. // Journal of Applied Physics;4/16/1997, Vol. 81 Issue 8, p4380 

    Studies the effects of Ba content on the dynamics of the crystallization process in barium ferrite thin films. Rapid thermal annealing; Determination of annealing time and temperature dependent crystalline volumes.

  • Influence of Fe Buffer Layer on Co-Doped BaFe 2 As 2 Superconducting Thin Films. Bonavolontà, C.; de Lisio, C.; Valentino, M.; Laviano, F.; Pepe, G. P.; Kurth, F.; Iida, K.; Ichinose, A.; Tsukada, I. // Advances in Condensed Matter Physics;7/14/2015, Vol. 2015, p1 

    A systematic characterization of Co-doped BaFe2As2 (Ba-122) thin films has been carried out. Two samples were available, one grown on CaF2 substrate and the other on MgO with an Fe buffer layer. The goal was to investigate films’ magnetic and superconducting properties, their reciprocal...

  • Iron nanoparticles in amorphous BaTiO[sub 3] thin films with large third-order optical nonlinearity. Wang, Weitian; Yang, Guang; Chen, Zhenghao; Zhou, Yueliang; Lu, Huibin; Yang, Guozhen // Journal of Applied Physics;12/15/2002, Vol. 92 Issue 12, p7242 

    Composite thin films comprising nanometer-size iron particles embedded in an amorphous BaTiO[sub 3] matrix (Fe/BTO) were fabricated by alternate pulsed-laser deposition from pure metallic Fe and ceramic BaTiO[sub 3] targets. The distribution of Fe nanoparticles in BTO matrix was observed using...

  • Manufactures and Characterizations of Photodiode Thin Film Barium Strontium Titanate (BST) Doped by Niobium and Iron as Light Sensor. Dahrul, Muhammad; Syafutra, Heriyanto; Arif, Ardian; Irzaman; Indro, Muhammad Nur; Siswadi // AIP Conference Proceedings;12/27/2010, Vol. 1325 Issue 1, p43 

    Pure Ba0,5Sr0,5TiO3 (BST) thin film, BST doped by niobium (BNST) and BST doped by iron (BFST) have been synthesized on p-type Si (100) substrates using Chemical Solution Deposition (CSD) methods followed by spin coating and annealing techniques. Current-voltage characterizations on these sample...

  • The Effect of 45° Grain Boundaries and associated Fe particles on Jc and resistivity in Ba(Fe0.9Co0.1)2As2 Thin Films. Hänisch, J.; Iida, K.; Kurth, F.; Thersleff, T.; Trommler, S.; Reich, E.; Hühne, R.; Schultz, L.; Holzapfel, B. // AIP Conference Proceedings;Jan2014, Vol. 1574, p260 

    The anisotropy of the critical current density Jc depends in general on both the properties of the flux lines (such as line tension, coherence length and penetration depth) and the properties of the defects (such as density, shape, orientation etc.). Whereas the Jc anisotropy in...

  • Fluctuation conductivity of single-crystalline BaFe1.8Co0.2As2 in the critical region. Kim, Soo Hyun; Choi, Chang Ho; Jung, Myung-Hwa; Yoon, Jung-Bum; Wang, X. F.; Chen, X. H.; Wang, X. L.; Lee, Sung-Ik; Choi, Ki-Young; Jo, Young-Hun // Journal of Applied Physics;Oct2010, Vol. 108 Issue 6, p063916 

    The magnetofluctuation conductivity, called excess conductivity, originated from the forming of the superconducting droplet near to the mean-field transition temperature, was measured for the optimally doped BaFe1.8Co0.2As2 single crystals with a critical temperature, Tc, of 24.6 K. This...

  • Ferrimagnetic resonance lineshape asymmetry due to Suhl instabilities. Dorsey, P.; Sokoloff, J. B.; Vittoria, C. // Journal of Applied Physics;8/1/1993, Vol. 74 Issue 3, p1938 

    Explains the calculations of the ferrimagnetic resonance lineshapes resulting from second order Suhl instabilities for thin films and spheres. Function of input power for thin film samples of both barium ferrite and yttrium iron garnets; Equation of motion for the magnetization; Use of fermi...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics