Influence of the Laser Repetition Rate on Crystalline Structure, Composition and Magnetic Properties of Laser Deposited Y3Fe5O12/Gd3Ga5O12(111) Films

2002 ◽  
Vol 720 ◽  
Author(s):  
S. Kahl ◽  
V.P. Denysenkov ◽  
S.I. Kranzusch ◽  
A.M. Grishin
Keyword(s):  
Surface Roughness ◽  
Magnetic Properties ◽  
Crystalline Structure ◽  
Coercive Field ◽  
Repetition Rate ◽  
The Other ◽  
Laser Deposition ◽  
Laser Repetition Rate ◽  
Experimental Parameters ◽  
Annealing Experiments

AbstractY3Fe5O12 (YIG) films have been deposited onto single crystal Gd4Ga5O12(GGG) substrates by publsed laser deposition. For a given set of experimental parameters, the oxygen background pressure and substrate tempetature were optimized to achieve the narrowest ferromagnetic resonance (FMR) lines. The repetition rate was then varied from 10 to 50 Hz. There is a cleasr transition from films with low saturation magnetization 4πMs ≈ 300 Gs, high coercive fields Hc > 20 Oe, and broad FMR lines ΔH > 100 Oe to films with 4πMs ≈ 1400Gs, Hc < 10 Oe, and ΔH ≤ 10 Oe. This crossover occurs when the laser repetition rate is changed from 20 to 30 Hz. No significant differences could be detected in any of the other investigated properties: crystalline structure, cation concentration rastio, amd surface roughness do not depend on the repetition rate. Annealing experiments show that the films deposited at 10 and 20 Hz repetition rate are oxygen deficent. We loaded the film deposited at 20 Hz with oxygen, so that it reached the bulk value for 4πMs. The coercive field, however, remained large.

Preparation and Magnetic Properties of La Substituted Barium Ferrites Synthesized by the Oxide one Pot Synthesis (OOPS) Process

2013 ◽  
Vol 634-638 ◽  
pp. 2250-2253 ◽  
Author(s):  
Sitthisak Sorlateap ◽  
Wirunya Keawwattana
Keyword(s):  
Magnetic Properties ◽  
Saturation Magnetization ◽  
Crystalline Structure ◽  
Coercive Field ◽  
Barium Ferrite ◽  
One Pot ◽  
Xrd Pattern ◽  
One Pot Synthesis ◽  
Ferrite Structure ◽  
Barium Ferrites

Lanthanum (La) substituted barium ferrite, Ba1-xLaxFe12O19(x=0.00-0.40) has been synthesized by the oxide one pot synthesis (OOPS) process. The crystalline structure and magnetic properties have been investigated by means of XRD, SEM and VSM. The XRD pattern matched with the barium ferrite structure. The saturation magnetization (Ms) and coercive field (Hc) of ferrites increased by substitution of La ions on Ba sites at the content up to x=0.15 and then decrease.

Influence of laser repetition rate on the Cu2ZnSn(SSe)4 thin films synthesized via pulsed laser deposition technique

2016 ◽  
Vol 157 ◽  
pp. 331-336 ◽  
Author(s):  
Sharadrao A. Vanalakar ◽  
Sawanta S. Mali ◽  
Ganesh L. Agwane ◽  
Arachana Kamble ◽  
In Y. Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Repetition Rate ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Deposition Technique ◽  
Laser Repetition Rate

Ferroelectricity of BiFeO3 Thin Films by Pulsed Laser Deposition and Effect of Atmosphere

2006 ◽  
Vol 320 ◽  
pp. 45-48
Author(s):  
Hyun Young Go ◽  
Naoki Wakiya ◽  
Keisuke Satoh ◽  
Masao Kondo ◽  
Jeffrey S. Cross ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Surface Roughness ◽  
Pulsed Laser Deposition ◽  
Epitaxial Film ◽  
Pulsed Laser ◽  
The Other ◽  
Laser Deposition ◽  
Phase Pure ◽  
Hysteresis Properties

In this study, BiFeO3 (BFO) epitaxial film was deposited on SrRuO3 (100)/SrTiO3 (100) substrates using pulsed laser deposition (PLD). Phase pure BFO thin film was obtained. Introducing a mask between the target and substrate in PLD improved the surface roughness from 47.8 nm (RMS, without mask) to 7.7 nm (RMS, with mask). The composition and electrical properties of BFO thin film were assessed after annealing for 1 h in Ar, N2, or O2 atmosphere at 600°C. The P-E hysteresis properties improved only in the O2 atmosphere. After annealing under O2 atmosphere, the leakage current decreased from 6.1 × 10-2 A/cm to 2.9 × 10-2 A/cm at 200 kV/cm, as in the other annealing atmospheres, but 2Pr increased from 35 BC/cm2 to 50 BC/cm2.

Anisotropic magnetic properties of Zn1–xCoxO thin films grown by pulsed laser deposition

2006 ◽  
Vol 3 (4) ◽  
pp. 1126-1129
Author(s):  
J. W. Lee ◽  
S. Kuroda ◽  
S. Yamada ◽  
K. Takita
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition

Effect of Surface Roughness on the Total Hemispherical and Specular Reflectance of Metallic Surfaces

1964 ◽  
Vol 86 (2) ◽  
pp. 193-199 ◽  
Author(s):  
R. C. Birkebak ◽  
E. M. Sparrow ◽  
E. R. G. Eckert ◽  
J. W. Ramsey
Keyword(s):  
Surface Roughness ◽  
Black Body ◽  
Black Body Radiation ◽  
The Other ◽  
Angle Of Incidence ◽  
Metallic Surfaces ◽  
Specular Reflectance ◽  
Other Hand ◽  
Hemispherical Reflectance ◽  
Effect Of Surface

Measurements have been made of the hemispherical and specular reflectance of metallic surfaces of controlled roughness. The surfaces, which were ground nickel rectangles, were irradiated at various angles of incidence by a beam of black-body radiation, the temperature of which was also varied. The instrumentation which was devised to perform the experiments is described. The measurements show that beyond a certain surface roughness, the hemispherical reflectance is virtually independent of further increases in roughness. On the other hand, the specular reflectance decreases steadily with increasing roughness. Additionally, the hemispherical reflectance is found to be quite insensitive to the angle of incidence, while the specular reflectance increases with angle of incidence for the rougher surfaces.

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