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$B!&(B Ag$BE:2CNL(B0, 10 wt.%

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(d)$BG.<}=L(BDL/L$B!J%9%H%l%$%s%2!<%8K!!K!"(B(e)$BEE5$Dq93N((Br$B!JD>N.;MC<;RK!!K(B

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$B!&(B $B!H(BThermal Transport in 90 K- and 60 K-Phase YBa₂Cu₃O_7-d High-T_c Oxides$B!I(B, M. Ikebe, H. Fujishiro, K. Nakasato, T. Mikami, T. Naito and T. Fukase, phys. stat. sol. (b) 209, (1998) pp.413-426.