Enhanced crystallinity and thermal stability of Ba2+ and Al3+–O2− co-substituted Sr2Si5N8:Eu2+

2020 ◽  
Vol 8 (29) ◽  
pp. 9874-9884
Author(s):  
Zebin Li ◽  
Takatoshi Seto ◽  
Yuhua Wang
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Solid State Method ◽  
Alumino Silicate ◽  
State Method ◽  
Thermal Stability Of ◽  
Enhanced Crystallinity ◽  
Silicate Phosphors

By co-substituting a cation (M2+:Ba2+ or Ca2+) and Al3+–O2− into Sr2Si5N8:Eu2+ in a solid-state method, we successfully synthesized the nitrido-alumino-silicate phosphors Sr(2−y)MySi5−xAlxN8−xOx:Eu2+ (Ba-AlO-258 (My = Ba0.3, x > 0) and Ca-AlO-258 (My = Ca0.3, x > 0)).

Improvement the thermal stability of bluish-cyan emitting phosphor Y2MgAl4SiO12:Eu2+ using substitution cations (Zn, Ca, Sr) for white LEDs

CrystEngComm ◽  
2021 ◽  
Author(s):  
Huifang Yang ◽  
Panlai Li ◽  
Zejun Ye ◽  
Xiaoxue Huo ◽  
Yu Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Solid State Method ◽  
White Leds ◽  
State Method ◽  
Thermal Stability Of

A series of bluish-cyan color adjustable phosphors Y2MgAl4SiO12:xEu2+(YMAS) and Y2(Mg1-y,My)Al4SiO12:Eu2+ (M=Zn, Ca, Sr) were synthesized by the solid-state method. The thermal stability can be improved by modifying cation, especially, the...

Effect of NaNO3 as Enhancer on YBa2Cu4O8 Superconductor Phase Formation via Solid State Technique with Heating at Ordinary Oxygen Pressure

2016 ◽  
Vol 840 ◽  
pp. 326-330
Author(s):  
Choon Min Cheong ◽  
Nursyafiqah Ismail ◽  
Noor Azlina Mohd Sarip ◽  
Noor Hakimah Hamzah ◽  
Nur Aleeya Ameera Ruzman ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Phase Formation ◽  
Oxygen Pressure ◽  
Formation Processes ◽  
Research Groups ◽  
Solid State Method ◽  
Conventional Solid State Method ◽  
State Technique ◽  
State Method

YBa2Cu4O8 has emerged as better choice in superconducting application thank to it strong thermal stability. High pressure techniques had been employed for the preparation of YBa2Cu4O8 but it might costly and/or inconvenient. Several research groups had showed that the YBa2Cu4O8 can also be prepared by conventional solid state method with heating at 1 atm oxygen pressure; however the phase formation processes are yet brief and clear. This work infiltrated the phase formation processes in preparing the YBa2Cu4O8 under solid state method with heating at 1 atm oxygen pressure. The effectiveness of the use of sodium nitrate as an enhancer was brought to light by the experiment results. Significant YBa2Cu4O8 phases were successfully synthesized.

scholarly journals A single-phase white light emitting phosphor Ba3Y(PO4)3:Ce3+/Tb3+/Mn2+: luminescence, energy transfer and thermal stability

RSC Advances ◽  
2019 ◽  
Vol 9 (52) ◽  
pp. 30406-30418 ◽  
Author(s):  
Yun Chen ◽  
Wenge Ding ◽  
Panlai Li ◽  
Xue Li ◽  
Qi Bao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
White Light ◽  
Single Phase ◽  
Solid State Method ◽  
Light Emitting ◽  
State Method

A series of Ce3+/Tb3+, Tb3+/Mn2+ and Ce3+/Tb3+/Mn2+ doped Ba3Y(PO4)3 were synthesized by the high temperature solid state method.

Improvement of thermal stability and luminescence in Ca6Ce2Na2(PO4)6F2:Mn2+/Tb3+via the substitution of Ca with Sr/Ba for structural modification

2021 ◽  
Vol 45 (6) ◽  
pp. 3202-3209
Author(s):  
Li Zhang ◽  
Zhijun Wang ◽  
Danjie Dai ◽  
Zhenhua Xing ◽  
Jinxin Zhao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Solid State ◽  
Structural Modification ◽  
Solid State Method ◽  
State Method

A series of Ca6−x−ySrxBayCe2Na2(PO4)6F2 (CMCNPF, M = Sr2+/Ba2+), CMCNPF:0.1Mn2+ and CMCNPF:0.1Tb3+ phosphors were synthesized by a high temperature solid-state method.

scholarly journals Effect of MgB2 additives on structure, electrical and thermal properties of Eu1Ba2Cu3O7

2018 ◽  
Vol 36 (4) ◽  
pp. 609-615
Author(s):  
Nurcan Akduran
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Measurement Method ◽  
Phase Identification ◽  
Solid State Method ◽  
X Ray ◽  
State Method ◽  
Traditional Solid State Method ◽  
Thermal Stability Of ◽  
The Eu

AbstractThe effect of MgB2 addition on the Eu1Ba2Cu3O7 (EBCO) ceramics was systematically studied. Series of Eu1Ba2Cu3O7 + x(MgB2) samples (x = 0 wt.%, 0.05 wt.%, 0.1 wt.%, 1 wt.%, 3 wt.%) were prepared using traditional solid state method. X-ray powder diffraction measurements were used for phase identification. The lattice parameters and orthorombicity decreased with MgB2 addition. A standard four point measurement method was used to determine transition temperatures Tc of superconducting samples. Tc values of the samples were decreasing with MgB2 concentration. TGA results indicate thermal stability of doped samples.

scholarly journals More superior pyroelectric performance of synthesized dravite by high-pressure solid-state method

AIP Advances ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 035304
Author(s):  
You Shan ◽  
Guojun Zhou ◽  
Kairen Chen ◽  
Changchun Zhao ◽  
Kun Shen ◽  
...  
Keyword(s):  
High Pressure ◽  
Solid State ◽  
Solid State Method ◽  
State Method
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