Differential Vaporization during Laser Ablation/Deposition of Bi-Sr-Ca-Cu-O Superconducting Materials
Keyword(s):
Nanosecond and picosecond pulsed laser ablated materials from Bi-Sr-Ca-Cu-O superconducting targets are monitored by inductively coupled plasma-atomic emission spectrometry with a photodiode array detector. Differential vaporization was observed; elements of the lower-melting-point oxides (Bi2O3, and CuO) are enriched in the vapor phase, indicating a thermal vaporization mechanism. Melted droplets observed with SEM and enriched Ca and Sr content in the ablation crater measured with EDX support the hypothesis. A steady-state mass ablation composition after prolonged laser sampling is also observed; the ratios of intensity for Bi, Ca, and Sr to Cu are constant for power density 0.1 to 3.0 GW/cm2.
1987 ◽
Vol 42
(9)
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pp. 1027-1038
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1991 ◽
Vol 46
(1)
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pp. 85-98
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1991 ◽
Vol 46
(11)
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pp. 1499-1515
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1987 ◽
Vol 42
(1-2)
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pp. 341-351
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1994 ◽
Vol 49
(10)
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pp. 989-1005
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2004 ◽
2015 ◽
2015 ◽