TY - JOUR
T1 - Sol-Gel preparation and characterization of fluorine substituted Bi(Pb)SCCO-2223 HTSC
AU - Ben-Dor, Lina
AU - Greenberg, J. H.
AU - Beilin, V.
AU - Shafranek, D.
PY - 1994/12
Y1 - 1994/12
N2 - Bi2-xPbxSr2Ca2Cu3OyF0.7 was prepared by sol-gel using citric acid and ethylene glycol. Thermodynamic calculations showed that a considerable loss of fluorine is to be expected. The samples were characterized by structural, thermal and physical methods. AAS showed that no appreciable amount of lead was lost during sintering. For x=0.35 the height Tc was observed, viz. 116K (onset). Using a selective fluoride electrode it was found that only up to 10% of the initial fluorine remained. The EPMA results showed that up to 90% of the sample contained (BiPb)SCCO-2223 the rest being (SrCa)2Cu3Oy. Fluorine could not be detected by this method. Fluorine lead to significant enhancement of the phase formation.
AB - Bi2-xPbxSr2Ca2Cu3OyF0.7 was prepared by sol-gel using citric acid and ethylene glycol. Thermodynamic calculations showed that a considerable loss of fluorine is to be expected. The samples were characterized by structural, thermal and physical methods. AAS showed that no appreciable amount of lead was lost during sintering. For x=0.35 the height Tc was observed, viz. 116K (onset). Using a selective fluoride electrode it was found that only up to 10% of the initial fluorine remained. The EPMA results showed that up to 90% of the sample contained (BiPb)SCCO-2223 the rest being (SrCa)2Cu3Oy. Fluorine could not be detected by this method. Fluorine lead to significant enhancement of the phase formation.
UR - http://www.scopus.com/inward/record.url?scp=43949159002&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(94)91690-X
DO - 10.1016/0921-4534(94)91690-X
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AN - SCOPUS:43949159002
SN - 0921-4534
VL - 235-240
SP - 931
EP - 932
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - PART 2
ER -