C
            - outgrowths in C
            + thin films of LiNbO
            3 on Al
            2O
            3-c

J. J. Kingston; D. K. Fork; F. Leplingard; Fernando Ponce

C ^- outgrowths in C ⁺ thin films of LiNbO ₃ on Al ₂O ₃-c

J. J. Kingston, D. K. Fork, F. Leplingard, Fernando Ponce

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Thin-film waveguides of LiNbO ₃ have been grown on Al ₂O ₃-c by off-axis rf magnetron sputtering. The films have been characterized optically by prism coupling measurements, crystallographically by x-ray diffraction, and morphologically by atomic force microscopy. We find that optical losses can be dominated by scattering from large outgrowths that litter the surface of the film. These outgrowths are c ^- grains imbedded in a c ⁺ matrix. Although some grains nucleate c ^-, others have their polarity reversed from c ⁺ to c ^- after nucleation. A model will be presented to explain the preferential nucleation of c ⁺ grains on Al ₂O ₃-c. The c ^- grains grow much faster than the c ⁺ ones because of attractive coulombic forces between the c ^- grains and the ionized Li and Nb species in the sputter plume.

Original language	English (US)
Title of host publication	Materials Research Society Symposium - Proceedings
Publisher	Materials Research Society
Pages	289-294
Number of pages	6
Volume	341
State	Published - 1994
Externally published	Yes
Event	Proceedings of the 1994 MRS Spring Meeting - San Francisco, CA, USA Duration: Apr 5 1994 → Apr 7 1994

Other

Other	Proceedings of the 1994 MRS Spring Meeting
City	San Francisco, CA, USA
Period	4/5/94 → 4/7/94

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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C ^- outgrowths in C ⁺ thin films of LiNbO ₃ on Al ₂O ₃-c . / Kingston, J. J.; Fork, D. K.; Leplingard, F.; Ponce, Fernando.

Materials Research Society Symposium - Proceedings. Vol. 341 Materials Research Society, 1994. p. 289-294.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

@inproceedings{4eb09f0c67574b738b38a590403ef31f,

title = "C - outgrowths in C + thin films of LiNbO 3 on Al 2O 3-c ",

abstract = "Thin-film waveguides of LiNbO 3 have been grown on Al 2O 3-c by off-axis rf magnetron sputtering. The films have been characterized optically by prism coupling measurements, crystallographically by x-ray diffraction, and morphologically by atomic force microscopy. We find that optical losses can be dominated by scattering from large outgrowths that litter the surface of the film. These outgrowths are c - grains imbedded in a c + matrix. Although some grains nucleate c -, others have their polarity reversed from c + to c - after nucleation. A model will be presented to explain the preferential nucleation of c + grains on Al 2O 3-c. The c - grains grow much faster than the c + ones because of attractive coulombic forces between the c - grains and the ionized Li and Nb species in the sputter plume. ",

author = "Kingston, {J. J.} and Fork, {D. K.} and F. Leplingard and Fernando Ponce",

year = "1994",

language = "English (US)",

volume = "341",

pages = "289--294",

booktitle = "Materials Research Society Symposium - Proceedings",

publisher = "Materials Research Society",

note = "Proceedings of the 1994 MRS Spring Meeting ; Conference date: 05-04-1994 Through 07-04-1994",

}

TY - GEN

T1 - C - outgrowths in C + thin films of LiNbO 3 on Al 2O 3-c

AU - Kingston, J. J.

AU - Fork, D. K.

AU - Leplingard, F.

AU - Ponce, Fernando

PY - 1994

Y1 - 1994

N2 - Thin-film waveguides of LiNbO 3 have been grown on Al 2O 3-c by off-axis rf magnetron sputtering. The films have been characterized optically by prism coupling measurements, crystallographically by x-ray diffraction, and morphologically by atomic force microscopy. We find that optical losses can be dominated by scattering from large outgrowths that litter the surface of the film. These outgrowths are c - grains imbedded in a c + matrix. Although some grains nucleate c -, others have their polarity reversed from c + to c - after nucleation. A model will be presented to explain the preferential nucleation of c + grains on Al 2O 3-c. The c - grains grow much faster than the c + ones because of attractive coulombic forces between the c - grains and the ionized Li and Nb species in the sputter plume.

AB - Thin-film waveguides of LiNbO 3 have been grown on Al 2O 3-c by off-axis rf magnetron sputtering. The films have been characterized optically by prism coupling measurements, crystallographically by x-ray diffraction, and morphologically by atomic force microscopy. We find that optical losses can be dominated by scattering from large outgrowths that litter the surface of the film. These outgrowths are c - grains imbedded in a c + matrix. Although some grains nucleate c -, others have their polarity reversed from c + to c - after nucleation. A model will be presented to explain the preferential nucleation of c + grains on Al 2O 3-c. The c - grains grow much faster than the c + ones because of attractive coulombic forces between the c - grains and the ionized Li and Nb species in the sputter plume.

UR - http://www.scopus.com/inward/record.url?scp=0028564206&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028564206&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0028564206

VL - 341

SP - 289

EP - 294

BT - Materials Research Society Symposium - Proceedings

PB - Materials Research Society

T2 - Proceedings of the 1994 MRS Spring Meeting

Y2 - 5 April 1994 through 7 April 1994

ER -

C ^- outgrowths in C ⁺ thin films of LiNbO ₃ on Al ₂O ₃-c

Abstract

Other

ASJC Scopus subject areas

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