Magnetoresistance properties of PbTe films grown by HWE technique are studied. Using the measured experimental data, the anisotropy in energy ellipsoids is determined and it is found that the rotation of energy ellipsoid in (100) PbTe films is in the 〈111〉 plane. Fermi energy level, the scattering parameter, and the effective masses m 1★ and m t★ in these films are also determined. These results compare well with available results on single crystals of PbTe. Copyright © 1985 WILEY‐VCH Verlag GmbH & Co. KGaA

Pukhraj R. Vaya

SEMICONDUCTING FILMS - MAGNETIC PROPERTIES

ENERGY ELLIPSOIDS

FERMI ENERGY LEVEL

Magnetoresistance

Single crystals

Semiconducting Lead Compounds

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physica status solidi (a)

Thin epitaxial n‐PbTe films of various thicknesses are grown on KCl substrates by hot wall epitaxy (HWE) technique. The X‐ray, SEM and TEM studies of these films revealed their single‐crystalline nature. The Hall mobility (μH) of these films is measured by Van der Pauw technique and compared with the numerically calculated values for PbTe. It is observed that μH very strongly depends on thickness for thin films but becomes independent of film thickness beyond 5 μm approaching its bulk value. The constant value of Hall coefficient in the temperature range 77 to 300 K show the extrinsic nature of these films. It is also noticed that the rate of increase of mobility with decreasing temperature becomes higher with film thickness. The diffused scattering mobility due to the size effect is calculated and compared with experimental data. A large discrepancy observed between these two is explained on the basis of the residual mobility contribution. The residual mobility is attributed to overall scattering due to grain boundaries, dislocations, defects, cleavage steps, and other surface effects. Copyright © 1985 WILEY‐VCH Verlag GmbH &amp; Co. KGaA

Thickness dependence of hall mobility of HWE grown PbTe films

Theoretical analysis of PbTe molecular flow in hot wall epitaxy system has been made using a Monte-Carlo approach for free molecular flow. Variation in transmission probabilities with the dimensions of the wall have been obtained. These results are applied to get epitaxial growth conditions for PbTe on KCl substrates. It has been observed that at condensation energy Ec=1.6 eV, the substrate temperature range obtained using the present analysis agrees well with the experimental observations.

Fulltext

Journal of Applied Physics

Computer-aided study of hot wall epitaxy system using a Monte-Carlo technique

The Pakistan Development Review

10.30541/v43i4i

The American Historical Review

John Tregenza. <italic>Professor of Democracy: The Life of Charles Henry Pearson, 1830–1894, Oxford Don and Australian Radical</italic>. [Carlton:] Melbourne University Press; New York: Cambridge University Press. 1968. Pp. xv, 279. $16.50 and Francis West. <italic>Hubert Murray: The Australian Pro-Consul</italic>. New York: Oxford University Press. 1968. Pp. vii, 296. $8.75

Solid-State Electronics

Elements of maser theory

Magnetoresistance of PbTe films

Journal	physica status solidi (a)
ISSN	00318965
Open Access	No