YI -xPrxBa2Cu306.95 --electrical resistivity 15g YI _~PrxBa2Cu307 -substitution efiects 477 Y(Ba~_~SL)2Cu~O~ -structure 441 YBa2(Cul _xFe~)3OT_~ - R a m a n scattering 419 YBa2Cu307 -proximity effect 9 -spin-spin r~,,xaiion time Tz 131 YBa2Cu30~ _a -irradiation effect 199 - N M R 97 -substitution effects 97 -synthesis 414 -XANES 57 YBazCu4Os - N M R 97 -substitution effects 97 YBa2Cu40r -substitution effects of Fe and Ni 32