scholarly journals High proton conduction in grain-boundary-free yttrium-doped barium zirconate films grown by pulsed laser deposition

2010 ◽  
Vol 9 (10) ◽  
pp. 846-852 ◽  
Author(s):  
Daniele Pergolesi ◽  
Emiliana Fabbri ◽  
Alessandra D’Epifanio ◽  
Elisabetta Di Bartolomeo ◽  
Antonello Tebano ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Proton Conduction ◽  
Laser Deposition ◽  
Barium Zirconate ◽  
High Proton

Pulsed Laser Deposition of Barium Zirconate Thin Films for Neutral Imaging Applications

1996 ◽  
Vol 441 ◽  
Author(s):  
R. Leuchtner ◽  
R. Yanochko ◽  
J. Krzanowski ◽  
W. Brock ◽  
J. Quinn
Keyword(s):  
Pulsed Laser Deposition ◽  
Ambient Pressure ◽  
Pulsed Laser ◽  
Single Layer ◽  
Laser Deposition ◽  
Degree Of Crystallinity ◽  
Great Promise ◽  
Barium Zirconate ◽  
Space Applications ◽  
Force Microscopy

AbstractLow work function surfaces offer great promise as thermionic converters and neutral conversion surfaces due to the relative ease with which electrons may be removed. BaZrO3 surfaces were prepared using pulsed laser deposition (PLD) and their materials properties evaluated for potential use as a neutral conversion surface for space applications. Single layer films were fabricated at temperatures ranging from 110°C to 600°C, and as a function of background ambient pressure. The degree of crystallinity of the resulting films was measured using x-ray diffraction (XRD) and the surface morphology evaluated with atomic force microscopy (AFM). The film quality was found to be directly related to substrate temperature: an increase in grain size from ˜ 10 nm to >50 nm and improved crystal orientation with respect to the substrate were observed as the deposition temperature was increased from 110°C to 600°C.

Grain orientations and grain boundary networks of YBa2Cu3O7−δ films deposited by metalorganic and pulsed laser deposition on biaxially textured Ni–W substrates

2006 ◽  
Vol 21 (4) ◽  
pp. 923-934 ◽  
Author(s):  
D.M. Feldmann ◽  
T.G. Holesinger ◽  
C. Cantoni ◽  
R. Feenstra ◽  
N.A. Nelson ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Grain Structure ◽  
Ex Situ ◽  
Full Width ◽  
Out Of Plane ◽  
Grain Orientations ◽  
Processed Sample

We report a detailed study of the grain orientations and grain boundary (GB) networks in YBa2Cu3O7-δ (YBCO) films ∼0.8 μm thick grown by both the in situ pulsed laser deposition (PLD) process and the ex situ metalorganic deposition (MOD) process on rolling-assisted biaxially textured substrates (RABiTS). The PLD and MOD growth processes result in columnar and laminar YBCO grain structures, respectively. In the MOD-processed sample [full-width critical current density Jc(0 T, 77 K) = 3.4 MA/cm2], electron back-scatter diffraction (EBSD) revealed an improvement in both the in-plane and out-of-plane alignment of the YBCO relative to the template that resulted in a significant reduction of the total grain boundary misorientation angles. A YBCO grain structure observed above individual template grains was strongly correlated to larger out-of-plane tilts of the template grains. YBCO GBs meandered extensively about their corresponding template GBs and through the thickness of the film. In contrast, the PLD-processed film [full width Jc(0 T, 77 K) = 0.9 MA/cm2] exhibited nearly perfect epitaxy, replicating the template grain orientations. No GB meandering was observed in the PLD-processed film with EBSD. Direct transport measurement of the intra-grain Jc(0 T, 77 K) values of PLD and MOD-processed films on RABiTS revealed values up to 4.5 and 5.1 MA/cm2, respectively. As the intra-grain Jc values were similar, the significantly higher full-width Jc for the MOD-processed sample is believed to be due to the improved grain alignment and extensive GB meandering.

Proton Conduction in Highly Textured Y:BaZrO3 and Y:BaZrCeO3 Thin Films Fabricated by Pulsed Laser Deposition

2012 ◽  
Vol 45 (1) ◽  
pp. 129-133 ◽  
Author(s):  
K. Bae ◽  
S. M. Choi ◽  
J. Hwang ◽  
J.-W. Son ◽  
J. H. Shim
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Proton Conduction ◽  
Laser Deposition

Ionic Conduction in Nanoscale Films of Yttrium-Doped Barium Zirconate

2006 ◽  
Vol 972 ◽  
Author(s):  
Joon Hyung Shim ◽  
Turgut M Gur ◽  
Fritz B Prinz
Keyword(s):  
Thin Film ◽  
Ionic Conductivity ◽  
Grain Boundary ◽  
Film Thickness ◽  
Ionic Conduction ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Grain Structure ◽  
Barium Zirconate ◽  
Nanoscale Films

AbstractProton conductivity of yttrium-doped barium zirconate grown on MgO(100) using pulsed laser deposition (PLD) has been explored as a function of film thickness (60∼670nm) related to crystal and grain structure in the nano scale. Highly textured thin film (60nm) without significant grain separation showed high ionic conductivity close to the bulk BYZ value while thick polycrystalline samples showed lower values with clear grain and grain boundary formation.

Microanalysis of silicate glass films grown on α-Al2O3 by pulsed-laser deposition

1993 ◽  
Vol 51 ◽  
pp. 438-439
Author(s):  
Michael P. Mallamaci ◽  
James Bentley ◽  
C. Barry Carter
Keyword(s):  
Liquid Phase ◽  
Single Crystal ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Ceramic Materials ◽  
Laser Deposition ◽  
Triple Junctions ◽  
Ion Milling ◽  
Multicomponent Oxides ◽  
Glass Films

Glass-oxide interfaces play important roles in developing the properties of liquid-phase sintered ceramics and glass-ceramic materials. Deposition of glasses in thin-film form on oxide substrates is a potential way to determine the properties of such interfaces directly. Pulsed-laser deposition (PLD) has been successful in growing stoichiometric thin films of multicomponent oxides. Since traditional glasses are multicomponent oxides, there is the potential for PLD to provide a unique method for growing amorphous coatings on ceramics with precise control of the glass composition. Deposition of an anorthite-based (CaAl2Si2O8) glass on single-crystal α-Al2O3 was chosen as a model system to explore the feasibility of PLD for growing glass layers, since anorthite-based glass films are commonly found in the grain boundaries and triple junctions of liquid-phase sintered α-Al2O3 ceramics.Single-crystal (0001) α-Al2O3 substrates in pre-thinned form were used for film depositions. Prethinned substrates were prepared by polishing the side intended for deposition, then dimpling and polishing the opposite side, and finally ion-milling to perforation.

Pulsed laser deposition of relaxor ferroelectric films

1998 ◽  
Vol 08 (PR9) ◽  
pp. Pr9-261-Pr9-264
Author(s):  
M. Tyunina ◽  
J. Levoska ◽  
A. Sternberg ◽  
V. Zauls ◽  
M. Kundzinsh ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Relaxor Ferroelectric ◽  
Laser Deposition ◽  
Ferroelectric Films

Pulsed laser deposition of PbMg1/3Nb2/3O3 thin films and PbMg1/3Nb2/3O3/PbTiO3 multilayers

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-65-Pr11-69
Author(s):  
N. Lemée ◽  
H. Bouyanfif ◽  
J. L. Dellis ◽  
M. El Marssi ◽  
M. G. Karkut ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition

SrBi2Nb2O9 ferroelectric thin films deposited by pulsed laser deposition on textured and epitaxied platinum electrodes

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-133-Pr11-137
Author(s):  
J. R. Duclère ◽  
M. Guilloux-Viry ◽  
A. Perrin ◽  
A. Dauscher ◽  
S. Weber ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Ferroelectric Thin Films ◽  
Laser Deposition ◽  
Platinum Electrodes
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