1966 mH3HKA TBEP40TO TEAA To;w. 8, B. 5

1966 S 0 LID S T A T E PH Y S fC S Vol. 8, M 5

TEH30fAAhBAHOMAfHHTHLIE 3ll>r:llEKTbl B n-Ge

B. C. AbBOB H T. B. CMupHoBa

B pa6oTe npoBeAeHo aKcnepHMCHTa.l\bHoe HCC.I\CAOBaHHe saBHCHMOCTH TeHso9¢¢eKTOB

OT MarHHTHoro noN'I AMI n-Ge c KOHQ;eHTpagHeH 9.1\eKTpOHOB ~1013 CM-3 npH 77° K. PesyAbTaTbi cpaBHHBaiOTCH c TeopHeii [ 2], Y<IHTb!BaiOIMeH To.l\bKO 9¢q>eKT nepepacnpeAeAe­

HHH 9.1\eKTpoHoB MelKAY 9KCTpeMyMaMn soH IIOA AeiicTsHeM Aeq>opMaQHll. AHa.I\H3HpyeTCH

BAHHHHe MeJKAOAHHHOrO paCCCHHI'IH Ha TeH30raAbBaHOMarHI'ITHble 9q>q>eRTbl. fioRa3aHo,

HanpaMep, 'ITO npH H30TpOIIHOM paCCCHHHH BAHHHHe MelKAO.\HHHOrO paCCCHHHH Ha TeH30·

aq>q>eKTbi He s aBnCHT OT HarrpaBAeHnH MarHHTHoro noAH n TOKa. TaJ(JKe noKasaHo, <ITO

't il saBnCHMOCTb K-, = -'t- oT 9HeprHH MOJKeT OJ(aaaTbCH cyiMeCTBeHHOH. KpoMe Toro, B pa­

.J. 6oTe BnepBb!e HCCAC40BaACH <IeTHbiH no MarHHTHOMY noAIO 9q>q>eKT XoAAa, B03HHKHOBeHI!e

KOTOpOrO CBH3aHO C Hecq>epH'lHOCTb!O 9HepreTH'leCKOH 30Hbl.

B npeAbiAYI.gMX pa6oTax OAHOro H3 aBTopoa [1•

2] paccqwTaHbi raJI.bBaao­

MaraHTHbie acpcpeKTbi B AecpopM!ipOBaHHOM n-Ge AMI HeKBaHTYIOI.gliX Mar­

HiiTHbiX IIO.I\eH. I1pw aTOM Y'lHTbiBaJI.OCb TOJI.bKO rrepepacnpeAeJI.eHwe HOC!i­

TeJI.eH Mem.Ay aKCTpeMyMaMM rrpw coxpaHeHHH Hx o6r.gero 'IHCJI.a. B HaCTO~­r.geii pa6oTe IIpHBeAeHbi pe3y.l\bTaTbl 9KCIIepwMeHTaJI.bHOI'O HCC.I\eAOBaHii~

TeH3oraAbBaHoMarHHTHbix acpcpeKTOB B n-Ge. KaK H c.l\eAOBa.l\o o_m.M{Il;aTb [2],

c yaeJI.H'leHHeM MarHHTHOro II0./1.~ H aaawCHM<;lCTb rrpOAO.I\bHoro Ea H rrone­

peqHoro E[HIJ XO.I\.1\0BCKOro II0./1.~ OT AecpopMagmr yMeHhlllaeTc~, a B HaChi·

r.geHHH ( u~ ~ 1) oTCyTCTayeT aoace. 1 B TO .tKe apeM$1 'leTHhie no H raJI.b·

BaHOMaJ'HHTHbie acpcpeKTbi B CH.I\bHOM IIOJI.e 'lYBCTBHTe.l\bHee K AecpOpMaQ;HH'

'!eM B CJI.a6oM, II09TOMY Mbl HCC.I\e,llOBaJI.H H cpaBHHBaJI.H C TeOpMe:li [ 2] TO.I\bKO

'leTHbie TeH30J'aJI.hBaHOMaJ'HHTHbie 9cpcpeRTbl. I1pM 9TOM IIOATBepAM.I\OCb, 'ITO

Me.(J~,llOJI.HHHOe pacce~HMe npM TeMrrepaTypax rropRAKa 77° K Mom.Ho He yqM­

ThiBaTh. l1saeCTHO, 'ITO IIpM CMelllaHHOM MeXaHH3Me paCCe$1HH$1 acpcpeKTHB·

't .J.ml l HbiH napaMeTp aHH30TporrHH K = --- aaaHCHT OT aHepnm. B pa6oTe

't il m l. IIOKa3aHO, 'ITO yqeT 9TO:li 3aBHCHMOCTH MO.(J~eT OKa3aTbC$1 cyr.geCTBeHHbiM.

1 . . Teu3oa<Jl«f>eKTbi B uacLIJBaro:r,geM MarHHTHOM noAe. O~uu MexaHH3M pacceHHHH

I1pH cpaBHe~IHH TeOpHH C 9KCIIepHMeHTOM 6yAeM paCCMaTpHBa Tb BeJI.H·

'lHHbl o£1 (H) .£1 (0) _ m 1 (H) )

M~"P(H)=

I •kl £1 (H) o£

1 (O) m 1 (0) '

Ltk'jP(H)= oE[HI] (H) _ m[HI]E[HI] I

ml£1

} (1) o£

1 (H) I

. oE (H) mH (H) Eu (H) I p:nnp(fi)= H •kl '6£1 (H) m

1 (H) £

1 (H) ' )

1 06o3Ha'leHHH 34ecb H B AaAbHei1meM Te me, 'ITO H B pa6oTax [I• 2]. Ccb!.I\KH Ha

q>opMyAbl H3 9THX pa6oT Mbi 6y4eM conpoBOJK4aTb cooTBeTCTBeHHO gHq>poi1: I, II.

7366 B. C . .A1>sos u T. B . CM.upxosa

saBHC.RIJ!He OT MarHHTHoro IIOA.R. BepxaHe HHAeKCbi [mnp] yKaSbiBaiOT aa­

rrpas.i\eHHe H, HHm.HHe - aarrpasAeaHe TOKa I. ~E osaaqae T rrpHpar,geaHe

aAeKTpHqecKoro IIOMI E IIOA Aei:icTBHeM Ae<J>opMayHH. Hanpas.i\eHHe TOKa

H Ae<J>opMayHH Beer Aa COBIIaAaAO, Mai'UliTHOe IIO.i\e nepneHAHKY A.RpHO K HHM.

AMI Toro qTo6bi oyea~Tb Be.i\HqHay paccMaTp~<maeMbiX acp¢eKTOB no

cpasaeaHro c x o porno HSBeCTHbiMH, npHBeAeM Bbipam.eHH,jl A.i\,jl M, L H P B npeAeAbHbiX cA yqa,jlx H = 0 H H- co ( u~ ~ 1) , BbJqHcAeHHbie B npe A ­

noAom.eHHH OTCYTCTBH,jl sasHCHMOCTH K (e). B CK06Kax AaHbi ccbi.i\KH aa

COOTBeTCTByiOI,gHe <J>OpMyAbl (2], OTHOC,j~I,gHeC.R K CAyqaiO He KBaHTYIOIJ!HX

Mai'HHTHbiX n o .i\e H

M~~ ( oo) = 1 (II, 12a); M~~~. -c«~l ( co)= 3 <;; :~) = 1, 4 (II, 96); l

f J

M 110 ( (13K -t-5) (2K -t-1) 0 1H co)= 2(5K2-t-17K-+-5) = 2, 3 {II, 1 e); (2)

110 _ (20K -+- 7) (2K -t-1) _ )· M1I2(co) - 3 (4K2-+-19K-+-4) - 2• 7 {II, 116 •

V2 ) Pii~ (O) == Lit~ (0)=-3-= 0.47; ~

no . ,- SK -+-4 ) L 1I2 ( oo) = v 2 2K -+- 7 = 0.36 (II, 10m. . j

(3)

K m ~

3AeCb K = Km , Km = - 11 = 20 [3], K"' = - 11

• AA.R aKyCTHqecKoro pac-., m .J.. ~.L

ce.11HH.R K ~ ae saBHCHT OT aaeprHH [ 4] . 11a AaHHbiX no MaraeToconpoTHBAe­

BHIO [ 4• 5] , K~ = 1.22. I1pHBeAeBHbie qHcAeHHbre oyeaKw AaHbi AA.R K = 20

= 1.22 = 16.4. TeasoKoa<J>cpwyHeHT P { co) s a BHCHT OT MexaaHsMa pacce.RHH,jl.

EcAH 't .L ' 't 11

- er, TO

p~~l( oo) = '; ( 3 )' (' ) K1'% :~l 16 2 -+- r ! 2 - r ! .

1 = 1.4 AA.R r = - 2 (II, 9f). (4)

J1aTepeCHO OTMeTHTb, q To B Ky6HqeCKOM KpHCTa.i\Ae, KOI'Aa Ae<J>OpMa­

YH,jl H TOK a a npasAeBhl H e no OCH CHMMe TpHH, aa XOAAOBCKHX 30HAaX B03-

HHKaeT 8AC H rrpH H = 0. EcAH I, P II [112], TO

~E111 (0) ~E11~ (0)

v2 C447t44-+- 3C (7t12- 7tn) - 3 - C441t44-+-C12 (7tn -+- 27tlz)-+-C(57tu-+-77tl2)

(5)

3AeCb C44, C12 H C = Cn -; C12 ynpyrHe IIOCTO,j~HHbie, 7t<k- KOS<J><J>H­

ijHe HTbl TeasoconpoTHBAeHH.R [ 6]. EcAH yqHTbiBaTb T O.i\bKO 6oAblllHe Te aso­

acp<J> eKThl, CB,j~SaHHble CO CABHI'OM SKCTpeM yMOB, TO B n-Ge 7tll = 1t12 = 0 V2

H OTHOWeBHe (5) paBHO - 3- H a e SaBHCHT OT MeXaHHSMa paCCeHHHH H aHH-

30TpOnHH acpcpei<THBHbiX Mace.

2. T easoaellelleKTbt npu cMemaaaoM MexaBHSMe pacceRBHR

I1pH cMelllaHHOM MexaaHsMe pacceHHHH K., saBHCHT OT aaeprHH. 0AHaKo

aToii sasHCHMOCTbiO tJ:acTo npeae6perawT [7· 8]. 01llH6KH, sosaHKaiO~,gHe Ha- sa

aToro, MoryT OKasaTbCH cyr,ge cTBeHHbiMH. Mbi rrpoAeMOHCTpHpyeM aTo aa

T eH.30WAbBGH.oMazH.umH.bZe scpcpex:mbl B n-Ge 7367

npu111epe cMewaaaoro pacceHHMH aa aKyCTH'leCKMX q>oaoaax H HOHax npu-

l\feCH.

,4AH aKyCTH'leCKOrO P acceHHHH [ 4] -tA. -tA· ~ x-'l, (x = _e_) H K A. = .1. ' II kT •

~A.

= 2A. A.I\H n-Ge paBHO 1.22 [4' 5] . ,4AH paCCeHHHH Ha HOHaX IlpMMeCH SaBH-'..L

CHMOCTb "til. (x) C yqeTOM .1\.0rapHIJ>MM'leCKOrO '!.1\.eaa HeCKO.I\bKO C.l\a6ee,

qeM x 'l•: IIpH yBe.I\H'leHHH X B 100 pas "t yBe.I\H'lHBaeTCH B 300-:--400 pas, 'til.

a K~· = - 11 yBe.I\H'lHBaeTcH a a 5-:--20°/0 B saBHCHMOCTH oT KOHgeaTpagHH

'til . ..L

npHMeceli [ 4].

Dpeae6peraH CAa6biM HSMeaeaHeM AorapHIJ>MH'leCKoro '!Aeaa, 6yAeM npeAnoAaraTb, 'ITO "~·, -t?!· ~ x'", a K~· AJI.H n-Ge, cor.11.acao [

4], paBHO 11.

TorAa

K =KA· x2 (1- v) -t-- ov "' "' x2 (1 - v) -t--v '

(6)

A. I II 't il K · 'I = --::-"--=- H 3- -"'- - 9

'tA. -f-- ~II. - KA. - . II 'II x=l "'

BHAHO, 'ITO rrpM CMewaHHOM MexaHHSMe pacceHHHH K, saB.HCHT OT aaep­

rHH SHa'lHTe.l\bHO C.l\a6ee, 'leM IIpM 'lHCTO IlpMMeCHOM, H C.l\a6oii SaBHCH­

MOCTbiO J(f_(· (e) AeiiCTBHTe.l\bHO MO)KHO IIpeae6pe'lb.

Dpu pac'leTe pasAH'lHbiX raAbBaHoMarHHTHbiX aq>q>eKTOB ycpeAHeHHe K, npHBOAHT K paSHbiM pesyAbTaTaM. TaK, A.I\H npeAe.ll.bHoro cAy'laH H = 0 QlC==: K cp.= aKA·, rAe

a=J 0

B BbipameHHM (3) QlC = ~K A., rAe

2 (1 - v) + v ~ = =-i.-----c---....--2 (1 - v)-t--liv •

(7)

(8)

Y'leT saBHCHMOCTH K, OT aaeprHH, cor.l\acao (6), npHBOAlfT I< saa'le­

HHHM M, paBHbiM

MlOO _ (2aKA. -t--1) (~KA. - 1) 0"'13 - (2~KA. -t--1) (aKA. - 1) '

Mn _ 3 (2aKA. -t--1) (~KA. - 1) "'' ~, -(«+!>)- (4~KA. -t-- 5) (aKA.- 1)

(9)

(10)

,4oiiO.I\HHTe.l\bHOe pacceHHHe Ha HOHaX npHMeCH npHBOAHT K yMeHbllle­

H RIO IlOABlf)KHOCTH U DO cpaBH eHHIO C IlOABlf)KHOCTbiO, COOTBeTCTBYIOIJ!eH

q HCTO aRyCTH'leCI<OMY pacceHHHIO uA·. HeTPYAHO noKasaTb, 'IT O

co u r x:Se-"'dx

·~== uA. = J -x""2_-t--_'1-:(c::-1--v..,-) 0

2aK -t-- 1 2K -t--1 •

(11)

Do.l\bSYHCb Ta6.1\HgaMlf COOTBeTCTBYIOIJ!e rO HHTerpa.l\a [ 9], MO)KHO Bbl'lH­

CJI.lfTb saBHCHMOCTb a, ~ H 'fl OT v. Ha pHc. 1 npHBeAeHa saBHCHMOCTb a H ~ OT napaMeTpa 1), xapaKTepHBYIOIJ!ero AO.I\10 aKyCTH'leCJWrO pacceHHlf.H:

'tj = 1 COOTBeTCTByeT 'lHCTO aKyCTH'leCKOMy paCCe.HHHIO, Ma.l\ble 'tj OSHa'laiOT

npeo6AaAaHHe pacce.HHHH aa npHMeC.Hx. KorAa BK.I\aA npHMecaoro pacce.H-

7368 B . C. A!> 808 u T. B. C.wupHoaa

HIUI Mall. (0. 7 < 1] < 1 ), a~ ~ H MQ)KHO BBeCTH 0,4HH napaMeTp o/( = aKA· = = ~KA·, OIIHCbiBaiOJ!!~·dl: aHH30TPOIIHIO . B aToii o6./\aCTH ·~ MOrKH O C'lHTaTb,

'ITO 't-e-'/,, a pacceHHHe aa Hoaax rrpHMeCH Y'lHTbiBaTb aq>q>eKTHBHO ­

yMeHbllleHHeM Qlt. f1pH 1J < 0.7 a. H ~ cyJ!!eCTBeauo pa3AH'lHbi. Eho rrpH~ B0.4HT, aanpHMep, K TOMy, 'ITO M~~g saatiHTell.bHO OTAH'laeTCH OT eAHHHgbi

(pwc. 1). l1s rpa!f>HKa BHAHO, 'ITO rrpH pactJeTe TeasocorrpoTMBAeHHH M~?

B n-Ge pacCeHHHe MOrKHO C'lHTaTb 'lHCTO npHMeCHb! M ('t~e'f,), li.Hlllb eCli.H

·~ < 0 .01, T. e . TOll.bKO IIpH O'leHb 60ll.blllHX KOHgeHTpagH.R:X IIpHMeCH MO~KHO

1.0

ne

0.5

0.2

o~~--~~--~--~~--~~--~~

0.2 0 4 0.5 0.8 1.0 ~

PHc. 1. 3aaHci!MOCTH Koa<(>qmgHeHTOB a (1) H ~ (2) u •

OT 1J = A , Bbi'JI!CAeHHble B npe,~~;noAoJKeHHI! K = 16.5 u .

H 0 = 10.

3 - saBUCH:MOCTb TeBsOK09<fl<J>H Y, H e n Ta M 5~~ OT 'J, BblttHC .. \ eBnan:

D O (9).

Mij~~ = 1, ec AH K HO :saDHcwr OT 3u eprHH.

npeae6pe'lb aKyCTH'leCKHM

pacceHaHeM. CAe,~~;oaaTell.b­uo, KOr,ll;a aKyCTH'leCKOe If

IIpHMeCHOe pacceRHHe BHO~

C.R:T cpaBHHMhll BKll.aA

(0.01 < -~ < 0.7), Hell.b3.R:

npeae6peraTb saaHCHMo~ CTb!O K(e). B npOTHBHOM

Cll.y'lae 3Ha'leHHH 3!f>!f>eKTHB~

uor o napaMeTpa aHH30Tpo~

IIHH o/(, IIO./\y'leHHbie H3

H3MepeHH.R: pa3li.H'lHbiX 9!f>­

!f>eKTOB, MOryT OTli.HtJaTbC.R:

6o11.ee 'leM B 1.5 pa3a

(pHC. 1).

3. TeusoraALBaHOMarHHT­HLie acpcpeKTLI H MemAO­

J\HHHOe pacceBHHe

f1pH y'leTe Me)K,II;O./\HH­

HOr O paCCeR:HHR BpeM.R: pe~

~aKcagHH 'tj ( e) 9.1\.eKTp OHOB

j~ro 3KCTpeMyMa 3aBHCHT

OT C,II;BHra ,II;Ha ~rO 3KCTpe~ MyMa e• IIOA ,~~;eiCTBHeM ,~~;e~ lf>OpMagHH. f1pH 3TOM ( 10]

(12)

" J. (!I ) ( e) 3,~~;ecb napaMeTpbi v J. (

11 J ( e) = 't

1 (e ) xapaKTepH3YJOT AOAJO Me*AO./\HHHOro

pacce.R:HH.R:, TaK KaK :.1. ( \\ ) = 't{ ( \1) B He,ll;e!f>OpMHpOBaHHOM KpHCTa./\Ae, a 't1 (e) ­

H30TpOIIHOe BpeM.R: p e ll.aKCagHH, COOTBeTCTBYIOJ!!ee Mem,II;Oli.HHHbiM n e pexo­

,ll;aM. N. - 'lHCAO 3KCTpeMy Moa; ~ (e) ogeaHaaeTc.R: H3 cooTHOllleHHH

/L)- N. (2 \ \ "r - 2(N.-1) "x /

(13)

H IIO IIOp.R:,4KY Beli.H'lHHbl 6./\HSKO K e,II;HHHge .

IToBTOp.R:.R: Bhl'lHr.,l\eHH.R: (I, 22)- (I, 31) H npHHHMa.R: ao BHHMaHHe (12), MO)KHO IIOKa3aTb, 'lTO yqeT Mem,II;Oli.HHHOrO pacce.R:HH.R: CBO,II;HTC.R: K IIpHMe­

HeHHIO onepaTopa

(14)

K IIO,II;bi HTerpall.bHOMY Bbi pa)KeHHIO B !f>OpMyll.aX, OIIHCbiBa!OJ!!HX oE 11 IIOJ\y~ tJeHHbiX ytJeTOM TOll.bKO 3!f>!f>eKTa IIepeTeKaHH.R: 9.1\.eKTpOHOB.

TeH30ZG.Jt.bBaHoMazHumHbze acpcpeKmbz s n-Ge 7369

B KaqecTae npHMepa paccMOTpHM cJI.yqaii aKycTHqecKoro pacceRHHH,

Kor,~~;a a (14) MOLKHO no.II.OLKHT~ K~ = 1. DpHMeae HHe onepaTopa Q npHBO-

oE1 I ( <O~'rc) ) BE1 I ( < E~v >) AHT K yMaomemno E aa 1 -t- (e-c) 11 E aa 1 - < E \ •

I uH I uH -~ -.- ""i l .~ 1 't

TaKHM o6pasoM, yqeT MeLKA0./\.11HIIOro pacceHIIHR npi1BOA11T K yMeHbllleamo

[

1 _ I E~V \ I I £ \ J TeasoKoaq>IJH! MHeiiTa M B \--;-i/v~-:; I '111C./\.o pas aesaai1CHMO OT

1-+- (e't)

aanpaaAeHHH TOKa 11 MarHHTIIOro IlO.II.R. EcAH K~ aa111eTHO OT./\.11t~aeTCR OT

e,~~;HH11!!br, TO yMeHbllleHI1e M ac./\. e,II;CTBHe MeLKAO.II.HIIHoro pacceHHHH paa­

./\.11'1HO A./\.H pasabrx Hanpaa.ll.eHI1H I 11 H~ Dpe,~~;nO.II.OLKHM AJ).H npocTOTbi, 'ITO

~ 11 v He saBHCRT OT aaepnm. Tor ,~~;a E 1 yMeHblli11TCH B { 1-- ~v J_ X oE I --

I (u: )~ 1

x[1-+(K~- 1) c2 -+-;~K- 1) )]} = 1 - 13.5~v-L 'IHC./1.0 pa.a, eC./1.1'1 H i1 [100]

11 1 1! [011] H B {1 -~v_~_ [1-+(K~- 1) (c11~~U~;)- 'l-+-

720K)]}=

= 1 - 18.5~v -L q 11C./\.O pas, ec.II.H H II [110] 11 I Jl [112]. 411C./\.eHHbie ogeHKH ,ll;aHbl ,11;.1\.H C.ll.ytJ.aH paCCeHHHH Ha HOIIaX Ilpi1MeCI11

oE Kor,~~;a MOLKHO CtJ.I1TaTb K~ = 10, K = 2. Ee.s MarHI1THoro noAH --:::L He y ae­

Er .11.11t~HBaeTcH, KaK npH aKyCTHtJ.eCKOM pacceHHim, a yMeiibluaeTCH a [1-+ ~v _~_ X

X Kl ~: l = [1 - 8~-~ _:_ J tJ.HC.II.O pa.a np11 .11.106oM aanpaB.II.eHHH TOKa.

J.1HTepeCHO OTMeTI1Tb 1 'lTO B BbrpameHI1H ,11;.1\.H TeHSOra.ll.b:B8HOMarHHTHbiX

a<J!q>eKTOB, YtJ.HTbraaiOigHe Mem,~~;oAHHHOe pacce HHHe, BXOAHT He TO.II.bKO K K = Km , ao 11 K~ B OT,II;e.ll.bHOCTI1. B np11H-

~

l!Hile 3TO ,ll;aeT B03MOLKHOCTb He.aaBHCHMO Oil-

pe,~~;e.II.HTb Km H K-. n pH TeMnepaTypax Bbillle

200° K. 11sMepHTb Km ,11;pyr11M cnoco6oM (Ha­

upHMep, MeTO,II;OM !!11K.II.OTpOHHOrO peSOHaHca)

MOLKHO TO.II.bKO IlpH ,II;OBO.II.bHO HlfSKHX TeMne­

paTypax ~4° K.

4. MeTO,lJ;HRa axcnepHMeuTa

11sMe peHHH 6bi.II.H npoae,~~;eHbi Ha o6pa.aMax

n-Ge, Bbrpe.aaHHHblX 113 O,II;HOrO MOHOKp11CTa.ll..ll.a

C KOHge HTpagl1eH HOCI1Te.AeH n = 1013 CM- 3 -11

XO.I\..1\.0BCKOH IlO,II;BliLKH OCTbiO u = (30 -:- 32) X X 103 CM2/ B • ceK. npH 77° K. 0 o ,II;BI1LKHOCTb

3.1\.eKTpOHOB np11 pacceHHHii TO.II.bKO Ha a K y ­

CTI1tJ.e CKifX r<oAe6aHHRX u A. == 41 000 CM2/ s X

X ceK. [5]. Op11 aToM 1l = ~ = 0.8, rroaTOMy uA.

np11 pactJ.eTe a q>q>eKTOB Mbl npe,~~;no.ll.araeM PHc. 2 . CxeMa npH6opa. 't ~ e-1.1, If K = 16.4K~ (0.85) :::-,: 14. 4./\.HHa

8

o6pa.agoa l = 1.8 -:-2 eM, cet:JeHHe S= (0.25 -:- 0.5) X 0.25 cM2• ,LI;.11.H co.a,~~;a­HHH OMHtJ.eCKHX KOHTaKTOB o6pa.agbr TpaaH./\.HCb B CP-4, .aaTeM K" HlfM a aa­

KyyMe Ilpl1 400° C IlpHBapi1B8./\.HCb K8Il./\.H 'lHCTOrO 0.1\0Ba.

H a p11c. 2 cxeMaTI1t~ecrm 11.ao6pameH np116op. 06paseg 7 .aa.:>K HMaeTCH

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(1] V. S. L v o v. Phys. Stat. Sol., 12, 891, 1965. [2] B. c. A b B 0 B. <:PTT, 8, 1375, 1966. [3) R.N. Dexter, H. J. Zeiger a. D. L ax. Phys. Rev., 104, 637, 1956. [4) A. r. CaMOHAOBH'I, 11. 5I. Kopea6AHT, .11. B. 4axOBCI<HH, B. 4. I1c i<pa.

<:PTT, 3, 3285, 1961. [5] C. Herring, T. H. Geballe, J. E. Kunzler. Bell. Syst. Techn. J., 38,

657, 1959. [6] C. Herring, E. Vo g t. Phys. Rev., 101, 944; 1956. [7] 4. r. AHA pH a H 0 B, .11. B. 4 a X 0 B c I< H H, 9. M. 0 Me A b .a H 0 B c I< H H H

B. .11. <ll H c T y A b. <I>TT. 6, 2825, 1964. [8] 4. r. Aa,~~;paaHOB H B . .11. <PHcTyAb. <I>TT, 7, 797,1965. [9] P . B. Dingle. Proc. Roy. Soc., 244A , 468, 1958.

[10] P. W. K e yes. Phys. Rev., 103, 1240, 1956. [11] F . J. Morin, T. H. Ge ball e, C. Herring. Phys . Rev., 105,525, 1957, [12) R. F. Broom. Proc. Phys. Soc., 71, 500, 1958. [13] R. B. Dingle, A. Dorea n, S. Roy. Appl. Sci. Res., 6, 144, 1956; V. Grey.

]. Appl. Phys., 34, 291, 1963.

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