Room Temperature Ferromagnetism in Dilute Iron-Doped Yttrium Aluminum Garnet Polycrystals

2009 ◽  
Vol 113 (46) ◽  
pp. 20044-20049 ◽  
Author(s):  
Z. Németh ◽  
K. Nomura ◽  
Y. Ito
Keyword(s):  
Room Temperature ◽  
Yttrium Aluminum Garnet ◽  
Room Temperature Ferromagnetism ◽  
Yttrium Aluminum ◽  
Iron Doped

scholarly journals Prepared and Characteristics of ZnO:YAG/Silicon Nanostructure Diodes Prepared by Ultrasonic Spraying

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Chih-Hung Hsu ◽  
Lung-Chien Chen ◽  
Jia-Ren Wu
Keyword(s):  
Silicon Substrate ◽  
Room Temperature ◽  
Yttrium Aluminum Garnet ◽  
Broad Band ◽  
Ultrasonic Spray Pyrolysis ◽  
Zno Film ◽  
Ultrasonic Spray ◽  
Silicon Nanostructure ◽  
Yttrium Aluminum ◽  
Level Transition

This work presents a novel white light source. An yttrium aluminum garnet (YAG) phosphor incorporated zinc oxide (ZnO) (ZnO:YAG) film is deposited on a silicon substrate by ultrasonic spray pyrolysis to form a nanostructure diode. A nanoflower consisting of a hexagonal nanopetal is formed on the surfaces of the silicon substrate. A white broad band at the room temperature photoluminescence ranging from 420 to 650 nm for the ZnO:YAG/silicon nanostructure diode was observed. The white broad band consists of the emissions of defect level transition of the ZnO film and the5D4level to the7F6and7F5level transitions of Ce3+ions.

scholarly journals Electron-phonon coupling in iron-doped yttrium aluminum garnet

2006 ◽  
Vol 74 (24) ◽  
Author(s):  
A. Anedda ◽  
C. M. Carbonaro ◽  
D. Chiriu ◽  
R. Corpino ◽  
M. Marceddu ◽  
...  
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Yttrium Aluminum ◽  
Iron Doped

Yag Single Crystals for Scintillators of Stem

1990 ◽  
Vol 48 (1) ◽  
pp. 166-167
Author(s):  
M. Hibino ◽  
K. Irie ◽  
R. Autrata ◽  
P. schauer
Keyword(s):  
Single Crystals ◽  
Yttrium Aluminum Garnet ◽  
Light Guide ◽  
Detection System ◽  
Polished Surface ◽  
Detective Quantum Efficiency ◽  
Backscattered Electrons ◽  
Electron Detection ◽  
Yttrium Aluminum ◽  
Phosphor Screens

Although powdered phosphor screens are usually used for scintillators of STEM, it has been found that the phosphor screen of appropriate thickness should be used depending on the accelerating voltage, in order to keep high detective quantum efficiency. 1 It has been also found that the variation in sensitivity, due to granularity of phosphor screens, makes the measurement of fine electron probe difficult and that the sensitivity reduces with electron irradiation specially at high voltages.In order to find out a preferable scintillator for STEM, single crystals of YAG (yttrium aluminum garnet), which are used for detecting secondary and backscattered electrons in SEM were investigated and compared with powdered phosphor screens, at the accelerating voltages of 100kV and 1 MV. A conventional electron detection system, consisting of scintillator, light guide and PMT (Hamamatsu Photonics R268) was used for measurements. Scintillators used are YAG single crystals of 1.0 to 3.2mm thicknesses (with surfaces matted for good interface to the light guide) and of 0.8mm thickness (with polished surface), and powdered P-46 phosphor screens of 0.07mm and 1.0mm thicknesses for 100kV and 1MV, respectively. Surfaces on electron-incidence side of all scintillators are coated with reflecting layers.

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