03aC16 化学溶液塗布法による(Nd_<1/3>Eu_<1/3>Gd_<1/3>)Ba_2Cu_3O_x酸化物超伝導体の結晶成長(結晶評価・その場観察(2),第36回結晶成長国内会議)

概要

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The as-deposited (Nd_<1/3>Eu_<1/3>Gd_<1/3>)Ba_2Cu_3O_x (NEG123) films on MgO(100) substrates by metal organic deposition (MOD) method are amorphous and turns into crystalline when it is heated around 900℃. The growth mechanism of MOD is still not yet to understand. In this work, we report in situ observation of growth process of NEG123 films using a high temperature optical microscope. High temperature optical microscope clearly shows that (1) a larger amount of white particles appear at around 890℃, (2) NEG123 plate-like crystals with facet faces are formed in the white particles and (3) many NEG211 needle crystals are grown from flux (Ba and Cu rich particles) at a rate of about 7.5μm/sec.
日本結晶成長学会の論文
2006-11-01