scholarly journals High quality Al0.37In0.63N layers grown at low temperature (<300 °C) by radio-frequency sputtering

2019 ◽  
Vol 100 ◽  
pp. 8-14 ◽  
Author(s):  
A. Núñez-Cascajero ◽  
R. Blasco ◽  
S. Valdueza-Felip ◽  
D. Montero ◽  
J. Olea ◽  
...  
Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4046
Author(s):  
Guo-Dong Hao ◽  
Manabu Taniguchi ◽  
Shin-ichiro Inoue

Hexagonal boron nitride (h-BN) is an attractive wide-bandgap material for application to emitters and detectors operating in the deep ultraviolet (DUV) spectral region. The optical transmittance of h-BN in the DUV region is particularly important for these devices. We report on the deposition of thick h-BN films (>200 nm) on Al0.7Ga0.3N templates via radio-frequency sputtering, along with the realization of ultrahigh transmittance in the DUV region. The fraction of the gas mixture (Ar/N2) was varied to investigate its effects on the optical transmittance of BN. DUV light transmittance of as high as 94% was achieved at 265 nm. This value could be further enhanced to exceed 98% by a post-annealing treatment at 800 °C in a N2 ambient for 20 min. The phase of the highly DUV–transparent BN film was determined to be a purely hexagonal structure via Raman spectra measurements. More importantly, these deposition processes were performed at a low temperature (300 °C), which can provide protection from device performance degradation when applied to actual devices.


2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Seunghun Lee ◽  
Ji Young Kim ◽  
Tae-Woo Lee ◽  
Won-Kyung Kim ◽  
Bum-Su Kim ◽  
...  

CrystEngComm ◽  
2014 ◽  
Vol 16 (16) ◽  
pp. 3359-3365 ◽  
Author(s):  
T. M. A. Bui ◽  
H. Le Trong ◽  
L. Presmanes ◽  
A. Barnabé ◽  
C. Bonningue ◽  
...  

Co1.7Fe1.3O4 thin films are submitted to spinodal transformation after annealing at low temperature.


2007 ◽  
Vol 90 (18) ◽  
pp. 181110 ◽  
Author(s):  
F. Michelotti ◽  
R. Canali ◽  
L. Dominici ◽  
A. Belardini ◽  
F. Menchini ◽  
...  

2018 ◽  
Vol 646 ◽  
pp. 209-215 ◽  
Author(s):  
Zhang Song ◽  
Tiphaine Bourgeteau ◽  
Itaru Raifuku ◽  
Yvan Bonnassieux ◽  
Erik Johnson ◽  
...  

Alloy Digest ◽  
1982 ◽  
Vol 31 (1) ◽  

Abstract AISI Type P20 is a chromium-molybdenum tool steel of medium carbon content. It usually is supplied in the prehardened condition (about 300 Brinell) so that the cavity can be machined and the mold or die placed directly in service; however, for some uses further treatments are employed. It is produced to high-quality tool-steel standards to permit a high luster to be achieved on the surface of the polished die cavity. P20 is used for molds for plastics and for die-casting dies for zinc and other low-temperature casting alloys. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: TS-393. Producer or source: Tool steel mills.


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