$B;nNAL>(B$B!'(BSmBaCuO$B7O%P%k%/D6EAF3BN!JF1OB9[6H!J3t!K@=!K(B

$B!!!!!!!!(B [DOWA-Sm10-Ag20%]

$B!!!!!!!!(B $B!&(Bab$BLLFb$*$h$S(Bc$B<4J}8~;nNA(B

$B!&(BSm123:Sm211=1.0:0.1 (Sm211$B4^M-NL(B9.1mol.%)

$B!&(B Ag$BE:2CNL(B20 wt.%

$B!&(B Pt$BE:2CNL(B 0.42 wt.%

$BB,Dj9`L\$*$h$SB,DjJ}K!(B$B!'(B

(a) $BG.EAF3N((Bk$B!JDj>oG.N.K!!K!"(B (c)$BG.5/EENO(BS$B!JDj>oG.N.K!!K!"(B(e)$BEE5$Dq93N((Br$B!JD>N.;MC<;RK!!K(B

$BB,Dj29EYHO0O(B$B!'(B10〜300K$B!J%<%m<'>l$*$h$S(B10T$B$^$G$N<'>lCf!K(B

$BB,DjAuCV(B$B!'G.J*@-B,DjAuCV!J4d

$B!J#1!K(B $B%<%m<'>lCfB,Dj%G!<%?(B

$B!J#2!K(B $B<'>lCfEE5$Dq93N(B,Dj%G!<%?(B

$B;29MJ88%!'(B

$B!&(B H. Fujishiro and S. Kohayashi , IEEE Trans. Appl. Supercond. 12, (2002) pp. 1124-1127

$B!&(B H. Fujishiro, M. Ikebe, S. Kohayashi, K. Noto and K. Yokoyama$B!"(BCryogenics 43, (2003) pp. 477-481.$B!!(B