Preparation of biaxially aligned cubic zirconia films on pyrex glass substrates using ion‐beam assisted deposition

1993 ◽  
Vol 74 (2) ◽  
pp. 1027-1034 ◽  
Author(s):  
N. Sonnenberg ◽  
A. S. Longo ◽  
M. J. Cima ◽  
B. P. Chang ◽  
K. G. Ressler ◽  
...  
2019 ◽  
Vol 18 (03n04) ◽  
pp. 1940062
Author(s):  
I. I. Tashlykova-Bushkevich ◽  
J. S. Yakovenko ◽  
I. A. Bushkevich

The surface microstructure and wettability of Al-1.0 at.% Cr alloy films obtained by ion-beam-assisted deposition on glass substrates have been investigated using atomic force microscopy, scanning electron microscopy and the sessile drop method. In the passive deposition regime, the surface roughness of the films increased from 8.9[Formula: see text]nm to 21.6[Formula: see text]nm with an increase in coating time from 3[Formula: see text]h to 9[Formula: see text]h. A quantitative analysis of the morphology evolution of the films during their growth was performed. The results revealed that Al-1.0 at.% Cr alloy films are hydrophilic. The mechanism of heterogeneous water wetting of Al-1.0 at.% Cr alloy films was considered, when the increasing surface roughness accounts for a decrease of hydrophilicity.


1999 ◽  
Vol 585 ◽  
Author(s):  
P. N. Arendt ◽  
J. R. Groves ◽  
S. R. Foltyn ◽  
Q. X. Jia ◽  
E. J. Peterson ◽  
...  

AbstractIon-beam assisted deposition was used to fabricate biaxially aligned cubic zirconia on flexible metal substrates. These films were used as templates for heteroepitaxially deposited YBa2Cu3O7-δ (YBCO) films. The quality of the crystalline texture of the template films has a direct influence on the superconducting properties of the final YBCO films. We describe our efforts to fabricate high-quality cubic zirconia templates on short-length substrates processed in stationary mode and meter-long substrates processed in continuous mode. Our best phi scan FWHM values for the films on the meter-long tapes were 12.6 degrees for the template and 6.1 degrees for the overcoated YBCO. This meter-long tape had a self-field, 75 K, superconducting critical current of 122 amps.


1997 ◽  
Vol 12 (11) ◽  
pp. 2913-2923 ◽  
Author(s):  
Y. Iijima ◽  
M. Hosaka ◽  
N. Tanabe ◽  
N. Sadakata ◽  
T. Saitoh ◽  
...  

Biaxially aligned YBa2Cu3O7−x (YBCO) films were fabricated on random Ni-based alloy tapes with yttrium stabilized-zirconia (YSZ) buffer layers deposited by ion-beam-assisted deposition (IBAD). Ar+ ion bombardment was found to have two significant effects on the crystalline structure of the YSZ buffer layers: to align a [100] axis with the substrate normal and a [111] axis with the bombarding beam axis. The resulting YSZ films were biaxially aligned on the random polycrystalline tapes, and the azimuthal distribution of the a- and b-axes of YBCO films on the top of the YSZ films was restricted to 10° FWHM. A critical current density (Jc) of 1.13 × 106 A/cm2 (77 K, 0 T) was obtained, and 1.1 × 105 A/cm2 was maintained at 5 T (77 K, B⊥c). The existence of both intrinsic and extrinsic pinning properties was clearly observed in the angular dependence of Jc with B⊥I. The longitudinal field effect on Jc was clearly observed, which indicated straight transport currents. This is evidence for strongly coupled current paths that demonstrate the bulk pinning properties of YBCO.


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