Spin dynamics in confined magnetic structures

343 Pages·2003·7.618 MB·English

by  Burkard Hillebrands, Kamel Ounadjela

BurkHairldbl rea nKdasm eOlu nad(jEedlsa. )
SpiDny namics
inC onfineMda gnetic
II
Structures
With1 79F igures
Inclugd3 i0ni nC olor
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Springer
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FachberePihcyhs ik Commisardieal t' EnerAgtioem ique
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Erwi-nS chriidinger5-6S traBe desM ateriaux
6766Ka3i serslautern 17A venudee sM artyrs
Germany 3805Gr4e noble
[email protected] France
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Spin dynaimnci ocnsfi ned magsntertuicct IuIrIB e usr kaHridl lebraKnadmse,Ol u nadje(lead s.).
p.e m.-(Topiicnas p plipehdy siIcSsS,N0 303-4;2v 1.86 7I)n cludes bibliroegfrearpehnaicncedais nl d ex.
ISBN3 -540-440(8a4c-i4d -free1-.Mp aagpneert)si tcr uct2u.Nr uec lesapri n.
I. Hillebrands1,9 5-B7IuIrO.ku anradd,j eKlaam,e l1,9 5-3IlSle.r ies.
QC754.2.M33260S06355 23 8.'3 -dc2210 02044592
PhysicsA satnrdo noCmlya ssificSacthieomn(e P ACS):
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ISSNp riendti ti0o3n0:3 -4216
ISSeNl ectreodniitci 1o4n3:7 8-509
ISBN3 5-40-48440-4S pringVeerr-lBaegr lHieni delbNeerwgY ork
Thiwso rki ss ubjetcoct o pyrigAhltrl.i ghatrser eservwehde,t htehrew holoer p arotf t hem ateriisacl o ncerned,
specifitchaerl ilgyh otfst ranslarteiporni,n trienugso,ef i llustrarteicointsa,tb iroona,d casrteipnrgo,d ucotni on
microfiolrim n a nyo thewra ya, nds toraigned atbaa nks. Dupliocfta htiipsou nb licaotrip oanr ttsh ereiosf
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Theu seo fg enerdaels cripntaimveesr ,e gistnearmeedst ,r ademaertkcsi.,nt hipsu blicadtoieonsno tim pleyv,e inn
thea bsenocfea s pecisftiact emetnhtas,tu cnha measr eex empftr omt her elevparnott ecltaiwvasen dr egulations
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Preface
Thiisst hsee covnodl uomfte h beo oske roine" ss pdiynn amiincc osn fined
magnesttircu ctDuurreistnh"gle. a fsetyw e aurlst,r amfaagsnte tidzya­tion
namihcasgs r owtnoo noef t hvee riym porstuabnjtei cnmt osd emrang ­
netiIstim so. u ari tmo c ovaelrml a jroers eaasrpcehsc ttusd iinte hdfii esl d,
whicchu rreinset xlpye rietnrceimnegnd deovuesl opimnbe onttgh,e neral
understoaftn hdbeia nsgpi hcy spihceanlo maennidan i tasp plicTahtei ons.
explosivoefi ngfroorwmtdahat tsiato onr aangdce o mmunictaetcihonno lo­
giheasp su shteidm esbceayloetnshd Ge H zr egiamneda,,s i tt uronustt ,h e
know-ohfso pwi dny namiiscc usr rebnetilanypg p ltione edwd evices.
AlthoCuMgOhSc ontitnodu oemsi ntahtseee miconidnudcutsiottirr s y ,
appartehnastte venraanlo eledcetvrioocnreiiscg, i cnoanlcleyai ssv uecdc es­
sotrosC MOSa,r neo wfi nditnhgew iaryt on icmhaer keIttia ssl. cs loe tahra t
Moorlea'was,n e xponeinntciraielnda esnes aintpdye rfortmhaanCtcM eO,S
hafso llofwomerod r teh atnh iyretaycr asn,n boemt a intafionreedFv oerr .
instaDnRcAeMh, a nso w( 0202ac) o mpleoxf4i 8Mt byi ts paern di,cit hs i p,
projewcitleld ,4r .eG3ab ciht s pien2r 0 11cH4h o.iwpe vtehrDe,R AMs peed
oft odiasyc lotsose a turartiisofinrn,og1 m 0 M0H za tp resteon2 t0M 0H z
by2 10,2a ndt hiwsi lblea m ajolri mitaItnti hoCenM .O Sw orlSdR,A M
isf asatnedsr c ableetsti ensr p ee6d0M,0H za tp res1eG nHtzi, n 2 10,2b ut
dissippoawtieenrms u cthh sea mwea ya sl ogaincdd o enso stc avleerw ye ll
ind enys.Ti hteirsce l eaarn leyef doo rt hmeerm otreyc hnowliotbghei tetse r
accteismste hsac to urleda tchhli esv oefcl o mpilteyx.
Sophistsitcoarttaeegdce h noblaosgoeindem sa gnetoelaercaetl r­onics
reaadtya na dvanscteadWg eit.h itnh nee xfte ywe armsa,g nertaincd om
accmeesmso r(iMeRsA Mw)i glolo nt hmea rkMeRtA.M u semsa gnehtyisc­
teretsosi tsod raeta an mda gnetoretsori esatddaa tnTach.ee dseev iacrees
madoefc onfimnaegdn etic strucotnua rc eisr cciuhniitttphe afgtur nact­ed
tiolni aks et atic semicocnhdiwupic ttthho aerd dRfeAedMa ttuhrateth e
dataarr ee tawihneetndh peo wiestr u rnoeffUd.n lipkree sfeonrtom fns o n­
volamteimloert yh,ew yi hlalv sew itcrhaitanengsrd e writcahbailllietnyg ing
thoosfec onventRiAoMn.Ia ntl h lea sfte ywe armsa,g nedteivci wcietsh
featsumraelstl hearan f ehwu ndrneadn omeatrebere si dnegv elvoepreyd
1 International TeRcohandomlaopgf yo rS emiconduct2o0r0s1S ,e miconducItno­r
dustrAys sociation
VI Preface
rapiAdlltyh.o tuhgsehw itcthiimnoegfsf erromaogbnjeethciatcvsb e e en
measumraendty i mients h pea snto,no eft heesaer lmieears urewmeernet s
madienm icrons-tsriuzceatdtpu irceoss teciomrneed s olSuetvieoernxa.pl e r­
imenrtesc,e rnetployr htaevsdeu, g gefsutretidhm eprr oveimnte hnaetc sc ess
anwdr ittiinmgde osw tnoa f etwe nosfp icosemcaoknidtnshg,e m saet erials
thuel timpartoemo ifs" eo n"-d oeffviccoenst rboylm laegdn etism.
Thibso orke potrhtorsse ec deenvte lopimnte hnaetr seo afs pidny namics
ins madlelv iTcheesfi .r svto lupmreo vipdreidm atrhibela ys kinco wledge
ofs pidny namainccdso veersesde ntthiweah lolrlyae n ogfes pidny namics
frommi llisteofc eomntdo steicmoensdct ahlivesosl ;uf moec uosnfe asas ntd
ultradfyansatmb iech aviinco orn finmeadg nesttircu ctIutir sie nst.e nded
top rovaic doem prehoevnesrivvoiefte hwce u rrsetnatot fte h aer otfs pin
dynamiinsc msa flelr romasgtnreutciItctus r heosua.lp dp etaorl e adweirtsh
ab roraadn ogfeb ackgroTuhnepd rso.m ipnleanoctf" e s pdiynn amiicns "
thtei tilned ictahtateths ii sasb ooakb ouuntd ersttahncedo ihnegrp ernet­
cessimoencahla niincs omn fisnterdu catnuidrt teses m pobreahla vpiaorrt,i c­
ulatrhloyts heaa tro eft echniimcpaolr tTahneec mep.h aisosin ts h sec ience
anedn gineoefdr yinnagmp ihce nomtehnaaatr r ee garadsue sde ful.
Thes ubjoefsc pti n-codhyenraeminintcc osn fined fersrtormuacg­netic
turceasbn e c onvensipelinintttlt oyh rceaet egDoirffieerste.in mte slceaalde s
tod istinctidvyen apmmhieyccs hiacnaFilis rmossnt.t , hl eo ngteismte scale
thawtib lela ddreisnts hebidos o 1k0,p0 s 1-0n sd,i poilnatre raecxttieornnsa,l
fieladnssd,p in-latticaer teih nmeta ejrdoarrci tvfiioonrngcTs eh ses. w itch­
inpgr oceodcucruetr hsr oaup grho cceaslspl reedc esmsoitoinwoahnli, c h
ist hper imsaoruyr ocfme a gnetirzoattaittohinaoi tnsg raduoaplploys ed
byd ampiTnhgte. h eordeetsiccrailop ftt hpiero enc esmsoitoiinonancl l uding
dampignogeb sa ctkot hpeh enomenoLlaongdiacua-lL ifsc(LhLiGt)z -Gilbert
equatwihoeenrl ee cetxrcoint aatrcieoo mnpsl eitgenloTyrh eidms.o dieeslx ­
tremseulcyc eisnds efsuclr tihbpeir negc esrseivoenmraeslca hla nism, despite
itisn trinsic Iwnte harikesng eitsmhsewee,e s a.kd laym pperde ceosfss piionns
indutcheseso -carlilnegodifm n agg netiwzhaitcciahopn ne ,r suipts ost e veral
nanosecAonin mdpso.r dtiasncto ivnte hraiyrs e haa bse etnh peo ssiobfi lity
supprersisnignign g byt hfimeea ltdc-hppiaunrlgas mee ttote hrfesr equency
andp haosfet hmea gneetxicci taSteicooonnn.dt ,ht ei mesocf1a -1l0ep0 s ,
elecetxrcoint actainonbnoeist g noarneydl oenlgeecrt;r onp-hpohnoonno­n,
phonaonnd,s pin-lianttteircaepc rteivoTanhiseLl L.G e quatgiroand ually
becoimnevsa alsqi uda nteuffme catpsp eTahrii.sas r egiionwn h itcrha nsfer
ofa ngumloamre ntfurmoa mm agnetpioclaalrleiylz eecdct urrornie nndtu ces
reveorfms aagln etiTzhaneta itouonrft.e h iinst eractisopnic nub rertewnete n
anfde rromamgonmeetbnirtci nagbsoa un te ws eotfd ynamiinwc hsi tchhe
enerogfty h ien jeeclteecdit str uonn ablet haFebe orvlmeei vel.o nT hird,
at imesfcrao1lmf es 1 p- se,l ectrona-nesdlp eicnt-rioonrntb eirta dcotmi­ons
inaTthei.rs e giofou nl tramfaagsnte tidzyantaimohinacb sse coamcec essible
fotrh pea sfte ywe atrhsr otuhgdehe velopomfn eonvtpe ull smeadg neto-
Preface VII
optilcaastleh raastl luostw o s tusdpyid ny namaitfc esm tosreecsoonldu tion
witehx trehmiegslhey n siittMyia.vg nesttircu cctaubnre ee sx cibtyoe pdt i­
caplr obtehsaa trs eh orttheafrnu ndamteinmteaslsc uaclahess s p �ilnattice
relaxtaitmiaeonsnd pretciemsaesnsid o nha alvreel aedtdyoe xciting results
asc hanignme asg netioznas tuibopni cotsiemceosncda les.
Theb oocko nsoifes itgsch otn tribwurtiitowtniestun,hn iform notation
anwdi tchr orsesf erienen acccehos n tritboru etliaostnue bdj ienoc tthsce orn ­
tribuAtsia olnrse.da idsyc uasbsoevtdeh b,eo oflko wfsr oaml ontgi mescale
tou ltrapsuhlosrets .
Int hfier scto ntribTuhtoimoaSnsc, h rJeofls,Fe ifd lReorkD, i ttrich,
DietSeure sWse,r nSecrh oVlazs,s Tisliiaon atnodHs e,r maFnonr srtee­r
vietwhb ea sic foumnadganteitoinz aotfi oTnh ifidsry srntea vmiiiencwts r.o ­
ductehsee q uatoifmo ont iaonndp recessswiiotncaahlpi pnlgti oce odn fined
magnesttircu ctTuhreee ffseo.cf tt e mperoantt uhrseew itcbheihnagvo ifo r
nanoscalei asml asgon eatdsad nrideps sr soevqdeu nis tter ownhgee nx ternal
fieladrsae p pltiheaadtr j eu sbte ltohwze e ro-temcpoeerratcthiurvreees h­
olTdh.e isses aurecesr itfioucrna dle rstdaantidani tnegga rnihdti yg h-speed
switcihnsi inngg le-mdaogmnaeaitpnip cl icTahtiissoe ncstb.iu oinlo ndt sh e
morfeu ndamentalilnyt roorditueomcn ittcierodon m aginnte htdeiy cnsa mic
regibmyMe i ltAaltb,u quearnqdTu hei,a viintl hlfieer svto lu(mToep ics
AppPlh.y 8s)3..
Int hsee cocnodn tribDuotuigoLln.aM, si lalnsdS ergRieoz enrdeev iew
thoer iogfit nhd ea mpionfsg p imno tiionnu sl traftehrirno masgtnreutci­c
turIetis sw. e lkln owtnh atthd ea mpionftg h per ecesdseisocnrb,iy tb heed
phenomenoGliolgbicecorantls ta,a insat k eyp arameitnte hrse p eoefd
spidny namIincp sa.r ticiunml eatra,tl hliinc- sfiylsmt elmisti,tsk l neo wn
aboutthm ei crospcroopciecbs ysw ehsi cthhe en erogfay s pisny stiesm
transfteoar nar teodm liact tIingc een.e trhadela ,m ping ca oinmssu tcahn t
smalletrh seto h-acna lledda mcprivinatgli aucneasd,lp idny namiicsch sa r­
acterbiyvz ieodl pernetc esssoi-ocnar,li lnegodift n hgse p isny stIenmt .h e
equatoifmo ont itohnid,sa mpipnagr amiestt reera atsae c do nstwahnetn
inf actth eirste h eoreatniedcx aple rimeevnitdaetlnh cateth dea mpipnag­
ramevtaerrwi ietst hh mea gnetiaznagtrlieeol na ttoit vhfieee lddi rection,
witthh mea gnitouftd heae p plfiieeldad n,dw itfhr equTehnceay u.t hors
oft hicso ntrigbouf tabireo yno tnhdiu ss upahle nomenodleosgcirciaplt ion
byp reseand tiisncgu isnst ieoronmf st wo-maignntoenr awchtiitcohhne sy,
introadsau m caej coaru osfme a gnedtaimcp iinnmg a ncyi rcumsitna nces
ultrathinfi lmmasg.n etic
Precciosneto rfuo llt ramfaagsnte tidzyantaimoiinnmc isc rosmcaogp­ic
netsitcr ucitasuc rreuscp iraelr eqiunai cshiiteerv eilniagan bfdla ess wti tch­
inignf utmuargen emteimco dreyv iAc leasr.eg ffeo hratbs e emna dree cently
tos eutp e xperimmeentthaotldh saa tl lionwv estimgaagtnientgid zya­tion
namiactps i coserceosnodl uTthieto hnrf.eo el locwoinntgr ibduitsicounsss
thrdeieff ereexnpte rimmeentthaofldo asrc cestshiteni gm e-dormeavienr -
VIII
Preface
sable havoifmo arg netinzaamteimloayng,,n etom-aogpnteitco,r aensdi stive,
element-Xs-erlmaeaycg tnievtei cd iccihrrcouilsamr.
Int hteh icrodn triobfut thiivoson l uJmiei,r Fgaesns bernedpeoorrn t s
numersiicmaull aotfsi wointsc dhyinnagm biacssoe ndt hLeL Ge quation.
Thei nflueonfdc ieff eraennits otcroonptirci bauntdei xotnesrfi nealplda ­
rametoensr wsi tcbheihnagvi isdo irs cuisnds eetda Iintl h.ee x perimental
sectmiaognn,e to-eoxppteirciaomlnem natgsn etthiificnl masr seh owTnh.e
phenomeonfso on- called ringiison bgs esrfuvopaervp d ar reisasotifio onn
pulse daunrdsa ttaifitoeinlcm d a gnitIunad ded.i tsipoiwnna, v per opaga­
tiopnr oceasrsaeed sd ressed.
Int hfeo urctohn tribSutteipoRhnue,sn s Reokb,e MrctM ichMaieclh,a el
DonahaunedS, h ehzKaaakdpa r ovaindo ev ervoifhe iwg h-frmeaqgu­ency
netdiecv imceea sureomnet nhtmesi crsocna dlaet,wa h iachrc eo rrelated
witnhu mersiicmaull abtaisooenndts h LeL Ge quatIinco onn.t rtaots hte
previcoounst ribumteiaosnu,r etdmheeetn ettchscte h anignee l ectcruirc­al
renitn stoefta hdce h anignte h peo larisztaaottfrie eo flne lcitgeHhdet r.ie it,s
thsep ionft heel ectthracotan r rtihieens f ormaantdi ootnffh,ei trshs oe p por­
tuniftoayrn ewg eneroaftdi eovnic coemsb isntianngd maircdr oelectronics
witshp in-detpe effnedctethnsaa tr ifsreot mh ien terabcettiwotenhes enp in
oft hcea rrainetdrh m ea gneptriocp eorftt himeea st erTihaetl i.m e-domain
devircees poanrsceeo sm patroem di cromasginmeutliacdt eivoenlsbo yp ed
thNeI SgTr o(uOpO MMFc od).eA lthotuhgithso ohlasb ecoamp eo werful
anrde litaebclhen fioqsrut eu dytihmneig c romasgwniettciohcfmi anggn eti­
zatitohnae,u thaodrdsr tehspeso tenltiimailto aftt himioosnd el.
Int hfief tcho ntribSutteifPoainnz,iz aJi anVnio ,g eMla,r lBioon fiamn,d
AlaFiontn aiinnet rotdhumece et hooftd i mree-soXl-rvaemyda gnectiircc ular
dichrtooii nsvme stsiugbantaen orseevceoornfmsd aa gln etiiznca otnifionne d
strucwtiutrehel se mseenlte ictTtyhi.iv tse chnhiaqtsuh eue n iqcuaep ability
ofs elecptriovbetilhnymeg a gnetiozffa etriroonm alganyeewtrhisic,fc ohr m
magnehteitce rostmraukcitinutsgru eist,fa obirln ed ependdeetnetrlmyi ning
dampibnegh avdiuorrit nhrgee veprrsoacle ss.
Int hsei xctohn triWbuotlifogWnae,nb geS rt,e fRaine saennHd,a nSsi eg­
manand drtehsdesy namriecs poonfms aeg netitzoha otstip oinTn hsea. u ­
thoirnst roedxupceer ipmreontothfaat lth s ep ipno-larniazteuodrfa ce u rrent
flowitnhgr omuagghn entainco structures underlies magnetization switching
antdh eex citoafct oihoenr sepniwtna veTsh.ii sso fc ritiimcpaolr tbaen­ce
cautsheee n erogfays pin-pobleaarcmia bznee dt uanbeotdvh eFe e rlmeiv el,
addiand ge groeffe r eeidnos mw itcdhyinnagm ics.
Howf ascta nt hem agnetiozfam taigonnec toincfi nsetdr uctbeu res
changoerid,no, t hweorr dwsh,aa tr teh feu ndamaennpdtr aalc tliicmoaiflt s
thsep eoefmd a gnetica nwrdre iatdiinngg ? Theasraeed dqrueeissnst eido ns
thlea tswtco o ntribouftt hibioosn osk . Very mheaisguhr eshmpaeevneetd s
beerne volutbiyto hnseit zreodb oospctoippciuacml p -parpopbreo wahcehr,e
Preface IX
illumionfaa s taimopnbl yae n earilnys tantflaansoehfol uisgc haten x pose
dynamiincttsoh s ei ndgilgefi etm tosreecgoinmde .
Int hsee vecnotnht ribTuhteRioao sni,Hn ugg,vo a dne Bne rTgh,o mas
GerraintdJs u,l iHuosh lfaedlddrt ewsoss e pariastseuT ehsefi. r spta rotf
thciosn tridbiustciuposrnse ecse ssswiiotncahli unlgt uraslsiahnspogeur rlt s es
generbaytf eedm tosleacsopenurdl sBeyps r.o pedrelsyi gtnhipenh ga asned
ampliotfut dhfieee lpdu lsietis s, shtohwacnto heroesncti lloafmt aigo­ns
netizastoi-ocnar,li lnegcdia nbnge s, u ppreTshsese edc.op nadro tft hceo n­
tribudtiisocnut shfseee mst osleacsoenrd- pulrseev-eiwrnhsdiauaclclh el do ws
ust or evemrasgen etitzhaetrim.oIa ntil ssl hyowtnh acto ntorfto hlfle o wo f
theen erignyj ebcytl eads er ipasup lisveoistt aeilmns peeduipdn ygn amics.
Usisnugc ahp rocedtuhurele t,i mlaitmeoi ftm sa gnetow-roipttaiinncdg
readiinrn egc ordingc ambnae tb eoroisbatyleo sdr deorfms a gnitude.
Int heei ghatnhfid n aclo ntribBuetrKitoo onp,m aandsd reuslstersa fast
magneti/dz eamtaigonnetdiyznaatmiiionfcn es r romatgrnaentsmiiectt iaolns
indubcyef de mtosheecaotnlidan sgpe url sEemsp.h aissoi nst hdei scrimi­
natibnegt wpeuernoe p taincdsm agnetoe-ffoepctEtivsci. d eonfsc eel ective
magnetimzeacthiaonnoi cscmusr frrio1nmf g s -p1si0 sr eporAtsae ldr.e ady
poinotueetda rlpiheern,o menomloodgeailrcsnea o ll o ngvearla indad,b et­
tedre scriipgsti ivboeyann b i nifitrispotr i ncmiopdledeli ss,c ubsyZs headn g,
HubnaenrBd e aureipnSa piiDrnye n amiinCc osn finMeadg neSttircu cIt ures
(TopicAsp pPlh.y 8s)3..
Iti sh oped tthhibasot o k cwoinltlr tiobt uhgtere o waipnpgr ecoifa tion
thfiee lodfs pienl ectrWoena irocebs s.e ravn ienwsg c ienatnidtfi ecc hno­
logidceavle loipnmw ehnimtca hg netsiecmsi,c ondauncedtl oercste,rn igcia­l
neerjiontigon g etfhobree rt tuenrd erstoaftn hduein ndge rlmyeichnagn isms
anfdo fra stteecrh noldoegvieclaoolpf mn eenwt deMvaiytc hebisos.o hke lp,
inp artitcuhlogasrrea, d usattued eanntdys o unpgr ofesswihooan raaelt s­,
tracbtyte hdfii esl adn wd how isthoa cquais roelb iadc kgrWoeuw nodu.l d
litkoet haHnakn Nse mbafcohtr e chnhiecliapnpl r epatrhibinosgo k.
KaiserslGaruetneorbnl,e BurkaHridl lebrands
Jul2y02 0 KameOlu nadjela
Contents
FastS witchinogf M esoscopiMca gnets
ThomSacsh rJeofls,Fe difl eRro,kD ittrDiicehtS,eu re ss,
WernSecrh olz, VassainldHi eorsm aTFnsonir asntteors , 1
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1I.n trodu.c..t..i.on. .................2. .................................
2.T heE quatoifMo ont i.o.n ..............................3. ..............
3.S maMlalg nePtairct ic.l.es .5
.. .. ...................................... .
4.F niite-ElMeimcernotm agn.etics 9
.. .....................................
5.M agnetiRzeavteiriosnTna h li n-CFoiE llme ments 10
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51.P. olycryCsotE allelmien.ne.t s. ......................1..1.. ... ....
52..S witcihnai R nogt atFiioen.lad.l .................1.7. ............
6.S witcohfPi enrgp endDiicsuclMraeerdt ie.a . ...............1.8 .........
7.E ffecotfNs o nzTeermop erature . 20
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71..L angeMviicnr omag.n.e.ti.c.s. ..................2.1. .............
72..Sw itcDhyinnagm aitNc osn zTeermop erature . 22
........... .......
8.S umma.ry. ........................................2..4. ...............
References 24
. .............................................................
SpinD ampingi nU ltrathiMna gneticF ilms
DougLl.aM si lalnsSd e rgMi.Ro e zen.d.e. ....................2.7. .... ...
1I.n troduc.ti..o.n 27
.... .. ...............................................
2.Fe ormragnReetsiocn iannUc let raFterhrionm agFnieltmisc.
Phenomenology .. 29
................................. ...................
21..T heL andau-LEiqfusahtiitozn
antdh Feer romagRneestoincRa enscpeeo ns
ofU ltraFterhroimna gnFeitliFmcrs eu qenDceyp endence
ofL inWeid tihn F MRa ndB LS. . 29
. .................. ...........
22.C. ommenotnEs x tensoifLo annsd au-LPihfesnhoimtezn ol3o3g y
...
23.B.r iCeofm menotnEs x perimDeantt.aa .l. ............3..5.. ......
3E.x triCnosnitcr ibtuott hiLeoi nnWsei d th:
TheT wo-MagMneocnh anism . 36
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31..H istoCroimcmaeln ts 37
...........................................
32..Th eN atuorfSe p iWna veisnU ltraFtehrirno maFginle.mtsi.4 c.0 .
33.T.w o-MagSncoant taenrdtih nFegM RR esponse
ofU ltraFterhrionm agFnielt.misc 44
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XII Contents
4.E xperimEevnitdaeflno tcrhe Re o loefT woM agnon-Processes
int hMei crowRaevsep oonfUs let raFtehrmiranog nets .4 9
...............
5.C oncluRdeimnagr. k.s. .....................54. ........................
References. . .. .56
.......... .......................................... . ... .
MagnetizatiDoynn amicsI nvestigated
by Time-ResolvKeedr rE ffectM agnetometry
JiirFgasesnb en.der .. . . . .. ..59
. .............. .......... ... ... ..... . ..... ..
1I.n troducti.on . . .. ..5 9
....... ............... ........ ......... . ......... .
2N.u merical SoifMm auglnaettiioDznyasnt aimoinc s
withtihSnet onMeord el. ... . . .. 60
.. .. . .... .... ................. . ......
2.M1o.d el . ... . .. .. . 61
..... ....... .. ...... ... ......... .......... ......
22.M.a gnetiDzyantaimoiinnSc tsa Mtaigcn eFtiiecl. d..s. ......6..2. .
23.M.a gnetiDzyantaimoiinnPc usl sMeadg neFtiiecl. d..s. ...64. .....
3T. ime-ReKseorlMrva egdn etoSmeettuepr .. .. 75
........ ......... .......
4.M agnetiDzyantaimoiinnFc esr rFiitlem s .. .77
.................. ...... ..
41..C ontorfMo alg netiDzyantaimoinc .s . 77
.... .......................
42.S.p iWna-vPer opagat.ion . 82
.... ................. ........ ..........
43.C.a lculoaftt hiMeoa ng neto-ROepstpiocn. se 86
.. ..................
5.C onclusion . .. 88
.......................... ..............................
References . . 89
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Index 95
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HighS peedS witchinagn d RotationDayln amics
inS mallM agneticT hinF ilm Devices
StepEh.eR nu ssReokb,e Dr.Mt c MichMaieclh,Ja .De oln ahue,
anSdh ehzKaaakda .. . . . . 93
... ........................ ... ........... .....
1.I ntrodtuocH tiigohn- SMpaegendeD teivci c.e.s . 93
.. . ........ ..........
11..B ackgro.und . . .. . . 94
.. ....... ... ......... . ......... ........... ....
12.M.a gneDteivci ces .. . .. 95
............... ...................... .....
13.S.i ngle-MDoodmealiinn .g .. 101
.... ....................... .........
2M.i cromaSginmeutliacot fHi iognhs- SDpeeveiDdcy en amics .1 09
........
21.N.I SOTb jeOcrti enMtiecdr oMagFrnaemteiwco(O rOkM MF) 101
. .
2.S2t.a ndMaircdr omaPgrnoebtliecm s. . 111
....... ............. .......
23.M.o deloifMn agg neRtoitca tainoSdnw itchin.g . 141
....... ........
2.M4o.d eloifDn egv iBcaessoe ndD omaWianl-Mlo tion. .181
.... ..... .
3H.i ghr-eFqueMnacgyn eDteivciM ceea surement . .191
............ ....... .
4.R otatainoFdne rromaRgenseotniiacnnG cMeRD evices . 162
......... ..
5.Sw itcohfSi mnagGl MlR D evic.e.s. . . .. 103
. .. ......... ........... .....
6.E ffecotfDs i soradneTdr h ermFalclut uations. 140
........ ..............
61.E.ff ecotfDs i sor.der . .1 40
........................ ..................
62.E.ff ecotfTs h ermFalltu ucati.o.n.s. ........1.43. .................
7.E ngineHeirgihn-gF reDqyuneanmPciryco perties 146
....................
References . . . 105
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