Lanthanide nanoparticle doped low-loss sol-gel amplifier materials

2005 ◽  
Author(s):  
Haiyong Gan ◽  
Robert A. Norwood ◽  
Li Li ◽  
Christopher T. DeRose ◽  
Jianfeng Wu ◽  
...  
Keyword(s):  
Sol Gel ◽  
Low Loss

Fabrication and Characterization of Low-Loss, Sol-Gel Planar Waveguides

1994 ◽  
Vol 66 (8) ◽  
pp. 1254-1263 ◽  
Author(s):  
Lin. Yang ◽  
S. Scott. Saavedra ◽  
Neal R. Armstrong ◽  
John. Hayes
Keyword(s):  
Sol Gel ◽  
Planar Waveguides ◽  
Low Loss ◽  
Fabrication And Characterization

Ultra-Low Dielectric Permitfivity Ceramics and Composites for Packaging Applications

1986 ◽  
Vol 72 ◽  
Author(s):  
L. E. Cross ◽  
T. R. Gururaja
Keyword(s):  
High Speed ◽  
Sol Gel ◽  
Strip Line ◽  
Low Loss ◽  
Silica Films ◽  
Microwave Frequencies ◽  
Low Dielectric ◽  
Ceramic Insulators ◽  
Interconnect Systems ◽  
Low Permittivity

AbstractTo accomplish the interconnect systems which will be required in the next generation of very high speed Ga:As digital ICs, it will be necessary to use strip line techniques for signal traces which must be deposited over very low permittivity dielectric substration. Materials with relative dielectric permittivities k 〈 3.0 and very low loss tangent up to microwave frequencies will be required. For ceramic systems such values are impossible to achieve in single phase monoliths, and composite approaches are required. Techniques for processing ceramic insulators which permit the introduction of controlled pore structures are discussed. The introduction of pores degrades some other desirable properties of the ceramic such as mechanical strength and thermal conductivity so that control of both scale and location of pores is desirable.Materials investigated include sol-gel processed silica films and monoliths, reactively sputtered silica, etched glass compositions and Macro-Defect-Free (MDF) cements.

Very Low Loss Tangent and High Dielectric Permittivity in Pure-CaCu3Ti4O12 Ceramics Prepared by a Modified Sol-Gel Process

2012 ◽  
Vol 95 (5) ◽  
pp. 1497-1500 ◽  
Author(s):  
Somsack Vangchangyia ◽  
Ekaphan Swatsitang ◽  
Prasit Thongbai ◽  
Supree Pinitsoontorn ◽  
Teerapon Yamwong ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Loss Tangent ◽  
Sol Gel ◽  
Low Loss ◽  
High Dielectric Permittivity ◽  
Sol Gel Process ◽  
High Dielectric

Sol−Gel Synthesis of Low-Loss MgTiO3Thin Films by a Non-Methoxyethanol Route

2008 ◽  
Vol 20 (13) ◽  
pp. 4260-4267 ◽  
Author(s):  
Kuzhichalil P. Surendran ◽  
Aiying Wu ◽  
Paula M. Vilarinho ◽  
Victor M. Ferreira
Keyword(s):  
Sol Gel ◽  
Low Loss ◽  
Sol Gel Synthesis

scholarly journals Low Loss Sol-Gel TiO2 Thin Films for Waveguiding Applications

Coatings ◽  
2013 ◽  
Vol 3 (1) ◽  
pp. 49-58 ◽  
Author(s):  
Tahar Touam ◽  
Lamia Znaidi ◽  
Dominique Vrel ◽  
Iva Ninova-Kuznetsova ◽  
Ovidiu Brinza ◽  
...  
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Low Loss ◽  
Tio2 Thin Films

Highly c-axis oriented, self-biased and low loss barium ferrite thin films by sol-gel method

2017 ◽  
Vol 189 ◽  
pp. 229-231 ◽  
Author(s):  
Daming Chen ◽  
Guijuan Wang ◽  
Zhuo Chen ◽  
Yong Chen ◽  
Yuanxun Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Barium Ferrite ◽  
Sol Gel ◽  
Low Loss ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ferrite Thin Films

scholarly journals Structural, Morphological and Dielectric Studies of Sol Gel Derived Gd Doped SrTiO3-δ

2020 ◽  
Vol 7 ◽  
Keyword(s):  
Sol Gel ◽  
Lattice Parameter ◽  
Dielectric Constants ◽  
Dielectric Studies ◽  
Low Loss ◽  
Gadolinium Doping ◽  
Gel Technique ◽  
Cubic Structure ◽  
Xrd Patterns ◽  
High Dielectric

Gadolinium doped SrTiO3-δ i.e. Sr1-xGdxTiO3-δ for various values of ‘x’ have been successfully synthesized using sol gel technique in the reported work. XRD patterns of the obtained ceramics are found to be sharp and well defined having no impurity phases for all the compositions. Lattice parameter ‘a’ decreases with increase in the amount of Gadolinium. XRD, FESEM and EDX studies confirm the formation of Sr1-xGdxTiO3-δ ceramics with required cubic structure. FESEM/EDX analysis reveals that ceramics possess high density with marginal inter-granular porosity. The dielectric studies show that the synthesized samples possess high dielectric constants, high ac conductivity and low loss factors which further improve with gadolinium doping

Lead Scandium Tantalate Thin Films for Thermal Detectors

1991 ◽  
Vol 243 ◽  
Author(s):  
A. Patel ◽  
N.M. Shorrocks ◽  
R.W. Whatmore
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Low Loss ◽  
Thermal Detectors ◽  
Bulk Ceramic ◽  
Sol Gel Process ◽  
Ceramic Blocks ◽  
Response Peak ◽  
Pyroelectric Response ◽  
Peak Value

AbstractThin films of lead scandium tantalate (Pb(Sc½Ta½)03) (PST) have been prepared by a novel modified sol-gel process. The process involves two deposition steps. In the first, layers of amorphous ScTaO4 are deposited by spin coating a solution of metallorganic compounds of scandium and tantalum. A film of lead oxide is then deposited onto the surface using a solution of lead acetate, and the process repeated to obtain thicker films. After firing the composite film, a pale yellow transparent film of PST is obtained. The films are highly orientated and 100% perovskite.The film's electrical properties have been measured against field and temperature, showing a strong induced pyroelectric response (peak value of 3.8 x 10−3C/m2K), peak permittivities of 4500 and low loss. The figure-ofmerit of these films (11 x 10−5Pa−½) indicates a performance equivalent to conventional bulk ceramic pyroelectric wafers prepared by slicing, lapping and polishing of ceramic blocks.

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