Structural Evolution of Nanostructured YBa2Cu3Ox Thin Films Formed by Pulsed Laser Glancing Angle Deposition

2007 ◽  
Vol 121-123 ◽  
pp. 947-950
Author(s):  
H.H. Wang ◽  
Y.P. Zhao
Keyword(s):  
Thin Films ◽  
Laser Fluence ◽  
Pulsed Laser ◽  
Structural Evolution ◽  
Glancing Angle Deposition ◽  
Ambient Oxygen ◽  
Glancing Angle ◽  
Shadowing Effect ◽  
Ambient Gas ◽  
Angle Deposition

Nano-structured thin films of amorphous YBa2Cu3Ox were prepared by pulsed laser glancing angle deposition. Ambient oxygen pressure and laser fluence have a strong effect on the microstructure of the films. The films exhibit a structural evolution from isolated nanorods, through network of vertical nanocolumns, to nanoparticles fractal with increasing ambient oxygen pressures. Shadowing effect, surface diffusion and flux scattering by ambient gas play main roles in determining the structural evolution.

scholarly journals Enhanced thermoelectric properties of SnSe thin films grown by pulsed laser glancing-angle deposition

2017 ◽  
Vol 3 (4) ◽  
pp. 293-298 ◽  
Author(s):  
Chun Hung Suen ◽  
Dongliang Shi ◽  
Y. Su ◽  
Zhi Zhang ◽  
Cheuk Ho Chan ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermoelectric Properties ◽  
Pulsed Laser ◽  
Glancing Angle Deposition ◽  
Glancing Angle ◽  
Angle Deposition

Improved Microstructures for Thermal Barrier Coatings Produced by Glancing Angle Deposition

1998 ◽  
Vol 555 ◽  
Author(s):  
K. D. Harris ◽  
D. Vick ◽  
M. J. Brett ◽  
K. Robbie
Keyword(s):  
Thin Films ◽  
Electron Beam Evaporation ◽  
Glancing Angle Deposition ◽  
Thermal Barrier ◽  
Porous Films ◽  
New Approach ◽  
Barrier Coating ◽  
Glancing Angle ◽  
Shadowing Effect ◽  
Angle Deposition

AbstractA new approach to deposition of thin films for thermal barrier applications is described. During electron beam evaporation, the extreme shadowing effect that is present at highly oblique incidence is employed to introduce porosity into thin films of zirconia. Using controlled substrate motion a solid capping layer may be applied to these porous films. By depositing layers of porous material and capping in an alternating fashion a new structure is produced which warrants evaluation as an improved thermal barrier coating.

scholarly journals Microstructure-Induced Anisotropic Optical Properties of YF3 Columnar Thin Films Prepared by Glancing Angle Deposition

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2413
Author(s):  
Yao Shan ◽  
Pian Liu ◽  
Yao Chen ◽  
Haotian Zhang ◽  
Huatian Tu ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Volume Fraction ◽  
Electron Beam Evaporation ◽  
Glancing Angle Deposition ◽  
Refractive Indices ◽  
Glancing Angle ◽  
Axis Parallel ◽  
Angle Deposition ◽  
Deposition Angle

Yttrium fluoride (YF3) columnar thin films (CTFs) were fabricated by electron beam evaporation with the glancing angle deposition method. The microstructures and optical properties of YF3 CTFs were studied systematically. The YF3 films grown at different deposition angles are all amorphous. As the deposition angle increases, the columns in YF3 CTFs become increasingly separated and inclined, and the volume fraction of YF3 decreases, resulting in lower refractive indices. This phenomenon is attributed to the self-shadowing effect and limited adatom diffusion. The YF3 CTFs are optically biaxial anisotropic with the long axis (c-axis) parallel to the columns, the short axis (b-axis) perpendicular to the columns, and the other axis (a-axis) parallel to the film interface. The principal refractive index along the b-axis for the 82°-deposited sample is approximately 1.233 at 550 nm. For the 78°-deposited sample, the differences of principal refractive indices between the c-axis and the b-axis and between the a-axis and the b-axis reach the maximum 0.056 and 0.029, respectively. The differences of principal refractive indices were affected by both the deposition angle and the volume fraction of YF3.

Anisotropic Co-Hf Thin Films for Micro-Sensors and Micro-Transducers

2015 ◽  
Vol 644 ◽  
pp. 65-69
Author(s):  
V. Madurga ◽  
C. Favieres ◽  
J. Vergara
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Transverse Direction ◽  
Anisotropy Field ◽  
Transverse Magnetic ◽  
Glancing Angle Deposition ◽  
Maximum Value ◽  
Easy Direction ◽  
Glancing Angle ◽  
Angle Deposition

Thin films of Co-Hf (≈ 86-14 % at.) were grown over Si micro-cantilevers using a glancing-angle deposition technique. A controlled easy direction of magnetisation (anisotropy field μoHk ≈ 0.1 T) in the longitudinal or in the transverse direction of the micro-cantilevers was generated. The mechanical properties of the films under the action of a magnetic field were opposite depending on the magnetisation’s easy direction: i) their deflection was either zero or the maximum value depending on the direction of the applied magnetic field with respect to the parallel or transverse easy direction of magnetisation; ii) the shift in the resonance frequency under a longitudinal or transverse magnetic field was also different depending on the longitudinal or transverse easy direction of magnetisation. The use of these coated devices with micromagnet-like films for sensors and transducers is discussed.

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