Liquid phase epitaxial growth of magnetic garnet films by isothermal dipping in a horizontal plane with axial rotation

Giess, E. A.; Kuptsis, J. D.; White, E. A. D.

doi:10.1016/0022-0248(72)90083-8

Cited by 99 publications

(11 citation statements)

References 13 publications

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“…I n LPE experiments by isothermal dipping [ l l ] in a horizontal plane with axial rotation w = dp/dt [12] the boundary layer thickness 6 is independent of the radial coniponent r , in the (rc, 9, x) cylinder coordinate system (except the border zone).…”

Section: Lpe Experimentsmentioning

confidence: 99%

Growth rate anisotropy and kinetic coefficients of vicinal faces at LPE garnet films. II. Kinetic coefficients

Görnert¹,

Hergt²

1978

Phys. Stat. Sol. (a)

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Kinetic coefficients of vicinal faces are determined in dependence on the vicinal angle 0.1° ⪅ α ⪅ 2° at (YSm)3(FeGa)5O12 LPE films oriented about in <110>. Dissolution striations in garnet single crystals marked by induced striations are less suitable for determination of kinetic coefficients. The driving force for volume diffusion and interfacial kinetic are presented in dependence on hydrodynamical conditions and vicinal angle. Using a model developed by Chernov, which well describes the anisotropy of kinetic coefficients of vicinal faces, the kinetic coefficients of steps, kst = (1.5 ± 0.3) × 10−2 cm/s, as well as currents of growth units to and off the interface are estimated.

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Section: Lpe Experimentsmentioning

confidence: 99%

Growth rate anisotropy and kinetic coefficients of vicinal faces at LPE garnet films. II. Kinetic coefficients

Görnert¹,

Hergt²

1978

Phys. Stat. Sol. (a)

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“…(saturation temperature) g COg + C"T. + C" ,,;;;; + C",T. ,,;;;; (references [2] and [9] where the C i are empirically determined constants, the Y i are the measured properties, and the Xi are the growth parameters. The number n is the total number of parameters considered.…”

Section: R"mentioning

confidence: 99%

Regression Model for LPE Film Property Control

Lewis¹

1978

IBM J. Res. & Dev.

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Empirical regression equations permit the calculation of liquid phase epitaxial (LPE) film properties from film growth parameters. Numerical differentiation of these equations facilitates examination of the sensitivities of film properties to fluctuations in growth conditions and the development of depletion-compensating growth strategies. Regression equations for nominal 3-ILm bubble size CaGe and Ga films have been generated and used for quantitative comparisons of the growth behavior of the two systems. A real time feedback control scheme has been applied to the Ga system resulting in 70 percent of the as-grown films falling within ± 1 percent of the target collapse field.

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“…This corresponds to Chernov's model, where surface diffusion is unimportant. The increasing slope of the k(a) curve for n 2 8…”

mentioning

confidence: 97%

On the interfacial processes at garnet LPE experiments

Görnert¹,

Ambly²,

Hergt³

et al. 1980

Phys. Stat. Sol. (a)

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L P E experiments are carried out by the horizontal dipping technique with axial rotation of plans Gd,Ga,O,, (GGG) substrates oriented by means of a n optical two-circle reflection goniometer. The measured growth rate of (YSm),(PeGa),O,, films as a function of the misorientation with respect to a singular { 110) plane in the range 0.05" 5 a & 13" shows an anisotropy depending nonlinearly on the angle. Surface kinetic coefficients are determined by separation of volume transport and interfacial processes. For 0" a 5 8" the k(a) dependence is linear with a slope (1.4 + 0.2) x x 10+ cm/s, for larger misorientations, however. the slope enlarges. The analysis of the experimental results with the combined volume and surface diffusion model from Gilmer, Ghez, Cabrera shows that the mean surface diffusion distance is in the order of the step height and the desolvation proccss a t transition from surface to a kink can be neglected against the desolvation a t transition from the liquid phase t o the surface. This corresponds to Chernov's model, where surface diffusion is unimportant. The increasing slope of the k(a) curve for n 2 8' suggests an interaction and superposition of atomic rough steps. LPE-Experimente werden durchgefiihrt mit der horizontalen Eintauchtechnik bei axialer Rotation ebener Gd,Ga,O,, (GGG)-Substrate, die mittels eines optischen Zweikreis-Goniometers orientiert wurden. Die gemessenc Wachstumsgeschwindigkeit der (YSm),(FeGa),O,,-Schichten zeigt als Funktion der Fehlorientierung beziiglich einer singularen { llO}-Ebene im Rereich 0.05" 5 13" eine vom Winkel nichtlinear abhangende Bnisotropie. Kinetische Koeffizient,en der fehlorientiertcn Flachen werden durch Separation von Volumentransport-und Grenzflachenprozessen ermittelt. Fur 0" 5 a & 8' ist die k(n)-AbhSngigkcit linear init dem Anstieg (1,4 5 0.2) x x 10+ cni/s, fur groBere Winkel hingegen wachst dcr Anstieg. Die Analyse der experimentellen Resnltate mit dem gekoppelten Volumen-und OberfIachendiffusionsmode11 von Gilmer, Ghez. Cabrera ergibt.. daB die mittlere freie Weglange der Oberflachendiffusion in der GroBenordnung der Stufcnhohe liegt, wahrcnd die Desolvatation beim Ubergang von der Oberflache auf eine Halbkristallage vernachlassigt werden kann gegeniiber der Desolvatat,ion beim tfbergang von der fliissigen I'hasc zur Oberfliiche. Diesentspricht einem Modell von Chernov, in dem Oberflachendiffusion unwesentlich ist. Der wachsende Anstieg der k(a)-Kurve fur (1 2 8" deutet auf Wechselwirkung und Uberlagerung der atomar rauhen Stufen hin. a

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Liquid phase epitaxial growth of magnetic garnet films by isothermal dipping in a horizontal plane with axial rotation

Cited by 99 publications

References 13 publications

Growth rate anisotropy and kinetic coefficients of vicinal faces at LPE garnet films. II. Kinetic coefficients

Growth rate anisotropy and kinetic coefficients of vicinal faces at LPE garnet films. II. Kinetic coefficients

Regression Model for LPE Film Property Control

On the interfacial processes at garnet LPE experiments

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