scholarly journals Size-dependent optical and thermochromic properties of Sm3Fe5O12

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37765-37770 ◽  
Author(s):  
Huanhuan Liu ◽  
Long Yuan ◽  
Hui Qi ◽  
Yanyan Du ◽  
Shan Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Inorganic Materials ◽  
Particle Sizes ◽  
Reaction Method ◽  
Size Dependent ◽  
Thermochromic Properties

Reversible thermochromic inorganic materials of Sm3Fe5O12with different particle sizes have been synthesized by a conventional high temperature solid state reaction method (2.51 μm) and sol–gel method (0.16 μm).

Structure and Luminescence of Ba3MgSi2O8: Eu2+, Mn2+ Phosphors

2011 ◽  
Vol 399-401 ◽  
pp. 1016-1019
Author(s):  
Yue Li ◽  
Da Wei He ◽  
Yong Sheng Wang ◽  
Fu Ming ◽  
Yang Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Phase Change ◽  
Emission Spectrum ◽  
Solid State Reaction ◽  
Crystallization Temperature ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Violet Light

In this paper, Ba3MgSi2O8: Eu2+, Mn2+ phosphor was synthesized by the sol-gel method and high temperature solid-state reaction method. The structure and emission spectrum excited by near violet light were investigated. we studied the process of phase change in roasting and determined the approximate crystallization temperature of Ba3MgSi2O8: Eu2+, Mn2+ phosphors. Our results demonstrate that 514 nm emission bands were from Eu2+ ions replacing of the sites of Ba2+ in Ba2SiO4. 440 nm emission bands originated from Eu2+ ions substituting the sites of Ba2+ in Ba3MgSi2O8, corresponded to 4f65d1→4f7 transition of Eu2+ ions. 615 nm emission bands ascribed to Mn2+ ions taking place of the sites of Mg2+ ions, corresponded to 4T→6A red launch of Mn2+ ions.

A high temperature stable piezoelectric strain of KNN-based ceramics

2018 ◽  
Vol 6 (41) ◽  
pp. 19967-19973 ◽  
Author(s):  
Zhenyong Cen ◽  
Yu Huan ◽  
Wei Feng ◽  
Yan Yu ◽  
Peiyao Zhao ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Piezoelectric Strain

Lead-free (1 − x)(0.96K0.46Na0.54Nb0.98Ta0.02O3–0.04Bi0.5(Na0.82K0.18)0.5ZrO3)–xCaZrO3 ((1 − x)(0.96KNNT–0.04BNKZ)–xCZ) piezoelectric ceramics were prepared by the conventional solid-state reaction method.

Superconducting Compound Hg0.8Sb0.2Ba2Ca2Cu3O8+δ Compared with Hg0.8Sb0.2Ba2Ca1Cu2O6+δ to Evaluate Transition Temperature

2020 ◽  
Vol 18 (11) ◽  
pp. 14-18
Author(s):  
Abbas K. Saadon ◽  
Kareem A. Jasim ◽  
Auday H. Shaban
Keyword(s):  
High Temperature ◽  
Transition Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Hot Spot ◽  
Solid State Reaction Method ◽  
X Ray Diffraction ◽  
Reaction Method ◽  
X Ray ◽  
Superconducting Compound

The high temperature superconductor’s compounds are one of the hot spot field of science, due to their applications in industries. Hg0.8Sb0.2Ba2Ca2Cu3O8+δ and Hg0.8Sb0.2Ba2Ca1Cu2O6+δ, were manufactured using a doable-step of solid state reaction method. The samples were sintered at 800 ° C. The transition temperatures Tc are found from electrically resistively by using four probe techniques. The resistivity become zero when the transition temperature Tc(offset) have 131 and 119 K, and the onset temperature Tc(onset) have 139 K for Hg0.8Sb0.2Ba2Ca2Cu3O8+δ and 132 K for Hg0.8Sb0.2Ba2Ca1Cu2O6+δ. Analysis of X-ray diffraction showed a tetragonal structure with lattice parameters changes for all samples.

The long persistent luminescence properties of phosphors: Li2ZnGeO4 and Li2ZnGeO4:Mn2+

RSC Advances ◽  
2014 ◽  
Vol 4 (22) ◽  
pp. 11360-11366 ◽  
Author(s):  
Yahong Jin ◽  
Yihua Hu ◽  
He Duan ◽  
Li Chen ◽  
Xiaojuan Wang
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Luminescence Properties ◽  
Persistent Luminescence ◽  
Reaction Method

The blue emitting long persistent phosphor (LPP) Li2ZnGeO4 and green emitting LPP Li2ZnGeO4:Mn2+ were newly prepared by a high temperature solid-state reaction method.

Photoluminescence and Electroluminescence Properties of (Ca,Sr)TiO3:Er

2016 ◽  
Vol 698 ◽  
pp. 60-65 ◽  
Author(s):  
Tôru Kyômen ◽  
Miyu Seki ◽  
Minoru Hanaya ◽  
Hiroshi Takashima
Keyword(s):  
Thin Films ◽  
Solid State ◽  
Band Gap ◽  
Solid State Reaction ◽  
Spin Coating ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Powder Samples ◽  
Coating Methods

Powder samples of (Ca,Sr)TiO3:Er were prepared by a solid-state reaction method. Photoluminescence due to f-f transitions of Er3+ was not induced by band-gap excitation of (Ca,Sr)TiO3 but by f-f transitions of Er3+. An electroluminescent device in which thin films of Ca0.6Sr0.4TiO3:Er and SnO2:Sb are stacked alternately was prepared by sol-gel and spin-coating methods. Very weak electroluminescence due to f-f transition of Er3+ was observed in the device.

Effect of B2O3 or SiO2 Fluxes on Morphology and Size of Pr-Doped CaTiO3 Phosphor Particles and on their Photoluminescence Properties

2011 ◽  
Vol 497 ◽  
pp. 31-37 ◽  
Author(s):  
Toru Kyomen ◽  
Ryuta Motani ◽  
Minoru Hanaya
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Primary Particle ◽  
Solid State Reaction Method ◽  
Particle Sizes ◽  
Photoluminescence Properties ◽  
Conventional Solid State Reaction ◽  
Red Phosphor ◽  
Reaction Method ◽  
Primary Particles

Powder of Pr-doped CaTiO3 red phosphor was prepared at 1473 K by a conventional solid-state reaction method with addition of B2O3 or SiO2 as a flux. Primary particle sizes of the prepared samples were increased by using B2O3 flux but decreased by using SiO2 flux. Clear planes, edges, or steps were observed on surfaces of the primary particles. The intensity of photoluminescence induced by irradiation of light with a wavelength longer than ∼350 nm was enhanced about three times by using B2O3 flux. The intensity of photoluminescence induced by irradiation of light with a wavelength shorter than ∼350 nm was enhanced about twice by using either B2O3 or SiO2 fluxes. The origin for the flux effects is discussed.

Enhanced electrical properties of (Li,Ce) co-doped Sr(Na0.5Bi0.5)Bi4Ti5O18 high temperature piezoceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33387-33392 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Guorong Li
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Co Doped

Lead-free piezoelectric ceramics with the formula of Sr1−x(Li,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 (LCSNBT-x, x = 0.0, 0.1, 0.2, 0.3, 0.4), were prepared by a conventional solid-state reaction method.

Luminescence and energy transfer of Eu2+/Tb3+/Eu3+ in LiBaBO3 phosphors with tunable-color emission

2015 ◽  
Vol 3 (35) ◽  
pp. 9112-9121 ◽  
Author(s):  
Shuchao Xu ◽  
Panlai Li ◽  
Zhijun Wang ◽  
Ting Li ◽  
Qiongyu Bai ◽  
...  
Keyword(s):  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Color Emission

A series of LiBaBO3:RE (RE = Eu2+/Tb3+/Eu3+) phosphors have been synthesized using the high-temperature solid-state reaction method.

A study on temperature sensing performance based on the luminescence of Eu3+ and Er3+ co-doped YNbO4

2020 ◽  
Vol 49 (24) ◽  
pp. 8194-8200 ◽  
Author(s):  
Jiashan Mao ◽  
Bin Jiang ◽  
Peng Wang ◽  
Liting Qiu ◽  
Muhammad Tahir Abass ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Temperature Sensing ◽  
Reaction Method ◽  
Co Doped ◽  
Sensing Performance

Eu3+ and Er3+ co-doped YNbO4 powder phosphors were synthesized by a traditional high-temperature solid-state reaction method.

scholarly journals Luminescence properties and energy transfer in Tb3+ and Eu3+ co-doped Ba2P2O7 phosphors

RSC Advances ◽  
2017 ◽  
Vol 7 (25) ◽  
pp. 15222-15227 ◽  
Author(s):  
Baoxing Wang ◽  
Qiang Ren ◽  
Ou Hai ◽  
Xiulan Wu
Keyword(s):  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Luminescence Properties ◽  
Energy Transfer Mechanism ◽  
Reaction Method ◽  
Air Atmosphere ◽  
Co Doped

The Ba2P2O7:Tb3+, Eu3+ phosphors were synthesized by a high temperature solid-state reaction method in air atmosphere and their crystal structures, lifetime, luminescence properties, and energy transfer mechanism were investigated in detail.

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