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Digitale Medien

Erbium incorporation in LiNbO3 by diffusion-doping (1996)

Baumann, I. ; Brinkmann, R. ; Dinand, M. ; [weitere]

Springer

Applied physics 64 (1996), S. 33-44

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ISSN: 1432-0630

Schlagwort(e): PACS: 42.70; 66.30

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract. The erbium incorporation into LiNbO3 by diffusion doping is investigated in detail by means of Secondary Ion Mass Spectrometry, Secondary Neutral Mass Spectrometry, Rutherford Backscattering, Atomic Force Microscopy, X-ray Standing Wave technique and optical site-selective spectroscopy. The diffusion of erbium in LiNbO3 can be described by Fick’s laws of diffusion with a concentration-independent diffusion coefficient. The diffusion constants and activation energies for Z-cut (X-cut) LiNbO3 are 4.8×10-5 cm2/s (12.0×10-5 cm2/s) and 2.28 eV (2.44 eV), respectively. A limited solubility of erbium in LiNbO3 has to be taken into account increasing exponentially with rising temperature. During the first step of diffusion an Er x Nb y -oxide layer is formed at the surface of the sample acting as diffusion reservoir. Erbium is incorporated into LiNbO3 on vacant Li-sites slightly shifted from the original Li-position along the (-c)-direction. Site-selective spectroscopy found four distinguishable energetically different erbium centres at this lattice site resulting from locally different symmetries of the crystal field.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s003390050441

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Digitale Medien

Über [(C6H5)B]n (1960)

Kuchen, W. ; Brinkmann, R. D.

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 72 (1960), S. 564-564

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ISSN: 0044-8249

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie