Synthesis, phase formation, and luminescence of (Sr,Ba)3MgSi2O8:Eu2+by a sol–gel-combustion hybrid process

Ba2SiO4:Eu2+ powders were prepared using a sol–gel-combustion (hybrid) process with tetraethyl orthosilicate (TEOS) and colloidal silica (C-SiO2) as Si sources. The effects of the silicon sources and preparation conditions on phase formation and luminescent properties were investigated. The B2S:Eu2+ powders synthesized with TEOS were composed of the irregular particles, whereas C-SiO2 was more conducive to uniform particle distribution for the Ba2SiO4:Eu2+ powders, leading to the enhancement of the emission intensity. The photoluminescence spectra of the synthesized powders exhibited broad excitation bands spanning 250 to 450 nm, and strong green-emission bands, whose intensities and positions were heavily dependent on the concentration of Eu2+ and Sr2+ substituted for Ba2+ in Ba2SiO4.

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Room-temperature Ferroelectricity and Ferromagnetism in Double Perovskite Bi2CoMnO6 Ceramics Synthesized Using Sol–Gel Combustion Technique

Journal of Superconductivity and Novel Magnetism ◽

10.1007/s10948-021-05947-2 ◽

2021 ◽

Author(s):

Rajnish Kurchania ◽

Riya Sahu ◽

Kumar Navin ◽

Oroosa Subohi

Keyword(s):

Room Temperature ◽

Sol Gel ◽

Double Perovskite ◽

Gel Combustion ◽

Combustion Technique

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Sol-gel Combustion Synthesis of Merwinite and its Biomedical Applications

Materials Letters ◽

10.1016/j.matlet.2021.130108 ◽

2021 ◽

pp. 130108

Author(s):

Subhashree Praharaj ◽

Senthil Kumar Venkatraman ◽

R. Vasantharaman ◽

Sasikumar Swamiappan

Keyword(s):

Combustion Synthesis ◽

Biomedical Applications ◽

Sol Gel ◽

Gel Combustion

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Sol-Gel Derived Titania/Hydroxyapatite Layer on Titanium Substrate

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.117-119.332 ◽

2011 ◽

Vol 117-119 ◽

pp. 332-334 ◽

Cited By ~ 1

Author(s):

Wen Yan Wang ◽

Yu Wu ◽

Jing Pei Xie ◽

Gao Lu ◽

Xiao Ming Dong ◽

...

Keyword(s):

Heat Treatment ◽

Surface Quality ◽

Phase Formation ◽

Volume Fraction ◽

Sol Gel ◽

Calcium Nitrate ◽

Titanium Substrate ◽

Gel Method ◽

Good Surface ◽

Coating Method

In this study, calcium nitrate(Ca(NO3)2•4H2O) and phosphorus pentoxide(P2O5) were used as precursor to prepare hydroxyapatite(HA) layer by sol-gel method, followed by a dipping-coating method to coat HA layer onto Ti. Phase formation and microstructure were investigated by XRD and SEM to study the influence of atmosphere on the property of HA layer. The results revealed that there exists no large cracks in the layer which was heated in the nitrogen, leading to a good surface quality compared with the layer which was heated in the air. And there is no obvious difference in crystallinity and volume fraction of HA in the layer when adopting heat treatment in different atmospheres.

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Interfacial mechanisms controlling phase formation in sol-gel derived lead zirconate titanate thin films

Bulletin of Materials Science ◽

10.1007/bf02757577 ◽

1994 ◽

Vol 17 (6) ◽

pp. 1005-1014 ◽

Cited By ~ 3

Author(s):

S B Majumder ◽

V N Kulkarni ◽

Y N Mohapatra ◽

D C Agrawal

Keyword(s):

Thin Films ◽

Phase Formation ◽

Lead Zirconate Titanate ◽

Sol Gel ◽

Lead Zirconate ◽

Zirconate Titanate

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Influence of the synthesis route on the properties of BNBT ceramics

Processing and Application of Ceramics ◽

10.2298/pac0902073m ◽

2009 ◽

Vol 3 (1-2) ◽

pp. 73-78 ◽

Cited By ~ 4

Author(s):

Elisa Mercadelli ◽

Alessandra Sanson ◽

Claudio Capiani ◽

Luisa Costa ◽

Carmen Galassi

Keyword(s):

Piezoelectric Properties ◽

Perovskite Phase ◽

Sol Gel ◽

Titanium Isopropoxide ◽

Microstructural Properties ◽

Barium Acetate ◽

Mechanical Mixing ◽

Chemical Route ◽

Critical Comparison ◽

Gel Combustion

BNBT (0.94[(Bi0.5Na0.5)TiO3]-0.06BaTiO3) nanopowders were prepared starting from an aqueous solution of inorganic salts (barium acetate, bismuth nitrate, sodium nitrate and titanium isopropoxide) either by the citrate- nitrate sol-gel combustion (SGC) or by spray drying (SD). Their chemical and microstructural properties were compared with the ones of the same system obtained by mechanical mixing of oxides (SSCO). The SD and SGC powders require temperatures 150 and 300?C lower than SSCO powder to form the perovskite phase. The chemical and physical properties of the obtained powders strongly depend on the considered chemical route. Therefore the subsequent sintering step and consequently the microstructure of the obtained ceramics differ significantly. The microstructures as well the piezoelectric properties of the sintered SGC, SD, SSCO samples are investigated and a critical comparison is presented. .

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