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*( ! ' ! !(( ! "# *! ! "40 !"# -! 55*' 5* '-(* "!41 ! "! ! -. -! '5 !(( !& ! 5 !5 !5 =( !(( ! !! 0"&; "#5;! 4 O %< ! '5! ( -! !* * * 5 !! .!(! ( ( ! ! !"# '& " "4 66 "&◦"5 2537 U =( ! ! '"-( " "-& !-.!#4 ! '- O % b "!"# -! . "! 41 !- 4 4 O %! !! '*!5! "1! ! !- 4 4 *.! '0 !( ' ! ( ! '1! (' '0 !(( "# ( * !'"-( !! !41& ,- 0- )((J 8 :( &0-L- :++ B5 BC((<!6" O % !# 5& !6" '0( %!& !6." % C !! !! !( ' !( "( -( !! α 3 " " ! % ! ! "(05" " "( - ! 9 " & !41( ! !5 ! "( '5! ( &K◦1850 U"-5 5!5 05" 5"5 !% ! 5!5 '54! -! !5 ! !# ! 00.41* "! '"#5 "- ! ";# ""5 6 <0!( ! 6 !5 *(! 5 !(( !"-41 ( "-& !& 90' !(( ( ! ! < 7%5& ! 05" 5" AOII /!! c! %"#!. >"* F "( * 5! ' I NÈSKMÝ2 :0) 6 0 8? ,- ) = )1) 9 T - )B ( T ) @) 1)ABC T )1B ! T % 5 - ! 0 !5& "-! ( !.- !"" "41 5" - ' 1#4 !5 2 *! -' !" "( - <"! -' 0" !# '(!4 "!5 4! ( " ! 0'( & !5 (! 8 " !* (! " "! ! 0 * '"(4! '( !4 5! "!# "( !"( !64 ! "!C " ! 0"! !5 ! ! " !!6"#4 4U = −MH = −M H cos α,IIF = − grad U = (M∇)H = M∂H∂zcos α,KIK " "( z 50 " "# ! "( ?"!"#.
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