(cv, ) (ρ, ),
. . , . 0,0005 (Mg) 23,2 (Nb3Ge, ) 39 (MgB2) ( 77 , ), 135 .
HgBa2Ca2Cu3O8+d (Hg−1223) 135 , 350 164 , 19 , . , (4.15 ) (164 ). 2000 . , 138 [7].
. , . , Ι c ( ) , , ΙΙ . . , (, , ). Ι . ΙΙ ΙΙ .
( ) . 1933 .
, , . , .
|
|
, . . . . , .
. c . , . .