Formation of high-Tc superconductors from rapidly quenched BiPbCaSrCuO glasses

Tatsumisago, Masahiro; Tsuboi, Shinzo; Tohge, Noboru; Minami, Tsutomu

doi:10.1016/0022-3093(90)90259-o

Cited by 26 publications

(8 citation statements)

References 21 publications

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“…Typically, the glass-ceramic route starts after mixing powders as Bi 2 O 3 , SrCO 3 , CaCO 3 , CuO, and PbO [3], or as nitrates [4], with a calcination step below the melt temperature similar to the normal solid state synthesis route. The calcination step has two essential purposes.…”

Section: Introductionmentioning

confidence: 99%

Critical aspects on preparation of Bi-2223 glassy precursor by melt-process

Nilsson

Gruner

Acker³

et al. 2008

Journal of Non-Crystalline Solids

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Section: Introductionmentioning

confidence: 99%

Critical aspects on preparation of Bi-2223 glassy precursor by melt-process

Nilsson

Gruner

Acker³

et al. 2008

Journal of Non-Crystalline Solids

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“…In fact, these high temperature superconductor compounds have compositions (examples in Table 23) corresponding to the 'heavy metal oxide' glasses, 36 and are therefore amenable to processing by the vitroceramic route, i.e. glass melting and quenching, followed by shaping and finally crystallisation and annealing to yield the superconducting phase 39,99,101,102,104,105 with zero resistance temperatures in excess of 100 K under optimal conditions. 101 Low concentrations of suitable dopants do not significantly enhance the superconducting properties, but are added to facilitate processing and yield more consistent products.…”

Section: Ionic and Mixed Ionic Electronic Conductors With High Oxygenmentioning

confidence: 99%

“…glass melting and quenching, followed by shaping and finally crystallisation and annealing to yield the superconducting phase 39,99,101,102,104,105 with zero resistance temperatures in excess of 100 K under optimal conditions. 101 Low concentrations of suitable dopants do not significantly enhance the superconducting properties, but are added to facilitate processing and yield more consistent products. Reported melting temperatures are in the 1100-1300uC range, with long term annealing around 850uC to form the superconducting phase(s).…”

Section: Ionic and Mixed Ionic Electronic Conductors With High Oxygenmentioning

confidence: 99%

“…Besides these lead free substitutes, Bi 2 O 3 based HMO glasses have found potential applications, partly together with PbO, in nuclear physics (scintillators, c-ray shielding windows), [129][130][131][132][133][134][135] optics, 36,[106][107][108][109][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128] magnetic materials 316 and glass-ceramic+ semi/superconductors. [99][100][101][102] However, in spite of their significance, compositions based on Bi 2 O 3 have drawn only scant attention, if mentioned at all, in classical 'mainstream' reviews of glasses. [2][3][4][5][6]20 Glass formation A comparison of the vitrification ranges of Bi 2 O 3 and PbO (and a few SnO examples) with common and uncommon glass formers, as found by various authors, is given in Table 12 for nominally binary systems, as a function of the estimated rate of cooling from the melt.…”

Section: Bismuth Glasses Introductionmentioning

confidence: 99%

“…(i) lead 'crystal' glass 89 (ii) glasses for nuclear waste immobilisation 6,[95][96][97][98] (iii) leaded CRT tube glass 89 (iv) superconductor synthesis, bulk or film, via the glass-ceramic route 39,[99][100][101][102][103][104][105] (v) heavy metal oxide (HMO) glasses with high refraction indices and far infrared (IR) transmission for optical devices and communications 36, (vi) HMO glasses for gamma radiation shielding [129][130][131][132][133][134][135] Main performance criteria…”

Section: Introduction Low Melting Glasses In Electronics and Other Apmentioning

confidence: 99%

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Review of Bi₂O₃ based glasses for electronics and related applications

Maeder

2013

International Materials Reviews

155

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The present work critically reviews the scientific and patent literature on low melting bismuth based oxide glass frits in materials for electronics, sensors and related applications such as sealing glasses, solar cells, architectural and automotive glass, the main motivation being to replace lead based materials by environmentally more benign ones. Due to similar glass forming properties of Bi and Pb, Bi based glasses are the closest 'drop-in' alternative for lead bearing formulations, and are therefore actually replacing them in many applications, helped also by previous experience with Bi containing materials in thick film technology and component metallisations. The outstanding issues are discussed, e.g. matching the lowest processing temperatures achieved by the classical lead based glasses without sacrificing durability and stability, as well as stability versus chemical reduction. Finally, consideration is also given to special 'heavy' glasses (often containing Bi and Pb together) that are useful in fields such as optics, superconductors and nuclear technology, as well as to specific Bi 2 O 3 containing crystalline compounds.Keywords: Glasses, Bismuth, Bi 2 O 3 , Electronics, Optics, Thick film technology, Sensors Introduction Low melting glasses in electronics and other applicationsAs for ceramics, inorganic glasses, glass-ceramic and glaze materials have long gone beyond their traditional uses to address a wide array of modern technological challenges, Owing to performance and cost criteria, most standard glasses have relatively high softening points. However, there are many technological applications where a low softening temperature is required, in order to lower energy expenditure, avoid damaging devices in contact with the glass during processing or ensure compatibility with other materials:(i) hermetic sealing of packages, lamps, electrical feedthroughs and semiconductor devices 13,14,16,17,19,44,45 (ii) hermetic sealing and mechanical attachment of sensors 23,27 ( Fig. 1) (iii) encapsulation of semiconductor devices 29,30 (iv) overglazing of automotive, packaging and architectural glass 33,34,[46][47][48] (v) photovoltaic (PV) solar cell technology -conductors and contacts 42,43,[49][50][51][52][53] (vi) enamelling of aluminium in architecture and home appliances 35,[54][55][56][57][58] (vii) thick film (TF) electronics and other devices 21,22,24,25,27,59 (Fig. 1, the section on 'PbO in low melting frits and TF technology'); especially, special low firing compositions for fabrication of circuits and sensors on glass or metals. 1,28,[66][67][68][69][70][71][72] For these applications, glasses are often formulated as frits (e.g. finely divided powder), which may be applied, dispersed in a suitable medium, onto a substrate by various methods such as slip casting, screen printing, roller/curtain coating, spraying, dispensing and electrophoresis, or as preforms for sealing. Classically, the aforementioned applications have to a great extent used lead based glasses, which have a rather unique combinat...

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