Crystal growth of Bi2(SrxCa3−x)Cu2Oy with traveling solvent floating zone method

Yeh, K. C.; Huang, Yaohua; Gan, Jon-Yiew; Chang, Ya‐Hui

doi:10.1016/j.jcrysgro.2004.04.048

Cited by 4 publications

(3 citation statements)

References 28 publications

(43 reference statements)

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“…(i) the left-upper restricted region of the map depicts the 14/24 formation, a Cu-enriched cuprate that results from the effect of the electrical current application on Cu flow, as discussed above (region III of figure 2(c)); (ii) the right-lower side, where 1/1 predominates, corresponds to a combination of conditions where the inherent high temperature gradient of the LFZ process and the faster growth kinetics of the cuprate prevail [5,7,11]; (iii) a transition region with the simultaneous crystallization of both cuprates is observed, being wider as the applied current is higher.…”

Section: Phase Developmentmentioning

confidence: 95%

Pulling rate and current intensity competition in an electrically assisted laser floating zone

Carrasco¹,

Silva²,

Vieira³

et al. 2009

Supercond. Sci. Technol.

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Bi–Sr–Ca–Cu–O (BSCCO) superconducting fibres were grown using the laser floating zone technique assisted by a dc electrical current (electrically assisted laser floating zone—EALFZ process). The simultaneous effect of pulling rate and applied current intensity was evaluated on the premises of the: (i) elemental partition coefficient between solid and molten zone; (ii) phase development; (iii) crystal size and alignment degree of the primary and superconducting phases; (iv) phase transformation during heat treatment and (v) superconducting properties. The highest critical current density value (JC = 2240 A cm−2) was obtained for the fibres pulled at intermediate pulling rates (75 mm h−1) grown under a maximum dc electric current intensity (200 mA).

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Section: Phase Developmentmentioning

confidence: 95%

Pulling rate and current intensity competition in an electrically assisted laser floating zone

Carrasco¹,

Silva²,

Vieira³

et al. 2009

Supercond. Sci. Technol.

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show abstract

“…It is probably that the crystal growth is under an effect of supercooling which harms the crystal quality at the powers lower than 58%. As the power increases, both temperature and temperature gradient near the solid-liquid interface are raised, and the constitutional supercooling is suppressed [12,13]. However, a further increasing in temperature is not beneficial after the power reach 58%, and excessive temperature gradient may raise non-determinacy in crystal orientation.…”

Section: Resultsmentioning

confidence: 99%

Effect of Temperature on La1.85Sr0.15CuO4 Single Crystal Growth by Floating Zone Method

Xiang

Zhang

et al. 2007

MSF

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Superconducting single crystals of La1.85Sr0.15CuO4 have been grown at various temperatures without single crystal seeds by the traveling-solvent floating-zone method. In order to avoid the formation of bubbles during the crystal growth process, a flowing atmosphere of 2 atm oxygen or 1 atm air was applied in different temperature range. It was found that the crystal quality could be improved by raising the growth temperature in a certain range, and the orientation changed from (110) to (100) at higher temperature. X-ray diffraction results showed that the full-width at half-maximum of the best as-prepared crystal was 0.086°. The crystals grown in 2 atm oxygen showed a superconducting transition temperature (Tc) of 37.3 K, while the crystals grown in floating air showed a Tc of about 35 K and it could be improved to 36.5 K by annealing in flowing oxygen.

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“…Several reports have shown that the lattice parameter c increases with the Sr/Ca ratio [29,30]. Furthermore, many studies carried out under various oxygen pressures during the growth (from 5 Â 10 À 4 to 10 bars) or by annealing process (from 2 to 400 mbars) have shown that the lattice parameter c increases when the oxygen pressure decreases [20][21][22][23][24]27].…”

Section: Effect Of Low Oxygen Pressure On the Growthmentioning

confidence: 99%

Investigations for the growth of large underdoped Bi2Sr2CaCu2O8+δ single crystals

Almeida-Didry

Giovannelli

Monot‐Laffez

et al. 2010

Journal of Crystal Growth

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Crystal growth of Bi2(SrxCa3−x)Cu2Oy with traveling solvent floating zone method

Cited by 4 publications

References 28 publications

Pulling rate and current intensity competition in an electrically assisted laser floating zone

Pulling rate and current intensity competition in an electrically assisted laser floating zone

Effect of Temperature on La<sub>1.85</sub>Sr<sub>0.15</sub>CuO<sub>4</sub> Single Crystal Growth by Floating Zone Method

Investigations for the growth of large underdoped Bi2Sr2CaCu2O8+δ single crystals

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