The optical constants of natural and artificial cuprite by an ellipsometric method

Mineralogical Magazine - Tập 42 Số 324 - Trang 505-508 - 1978
E.F.I. Roberts1, P. Rastall1
1Department of Metallurgy and Materials, City of London Polytechnic, Whitechapel High Street, London E1 7PF

Tóm tắt

SummaryEllipsometric measurements in the spectral range 250–850 nm have been made on polished single crystals of natural cuprite from Namibia and of artificial cuprite grown by a total-oxidation method from pure copper. Derived values of the refractive indices, absorption coefficients, normal reflectances, and the complex dielectric constants for the two materials are all closely similar, suggesting that the stoichiometry and purity are essentially the same. Values of the absorption coefficient at the red end of the spectrum are inconsistent with the observed transparency of the crystals, and are compatible with a 10 nm surface oxidation film of cupric oxide. This study is part of a wider survey of the effects of doping and stoichiometry on the optical parameters of cuprite.

Từ khóa


Tài liệu tham khảo

Zhilich, 1960, Soy. Phys. Solid State [translation],, 2, 1587

10.1051/jphys:01976003707-8089500

Roberts, 1974, J. Phys. (E),, 7, 379

Shestatskii, 1969, Phys. Star. Solidi,, 32

10.1016/0040-6090(72)90211-8

Gross, 1962, Soy. Phys.- Dokl., 7, 336

10.1364/AO.8.001965

10.1016/0022-0248(74)90110-9

10.1016/0022-3697(66)90064-3

Muller, 1973, Advances in Electrochemistry and Electrochemical Engineering,, 9, 167

Thông tin
Thông tin xuất bản

Mineralogical Magazine

Tập 42 Số 324

505-508

Thông tin tác giả