Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide
The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak refl...
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E-Artikel |
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1967 |
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Online-Ressource 8 |
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APS Digital Backfile Archive 1893-2003 |
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Enthalten in: The physical review - Lancaster, Pa. [u.a.], 1893, 155(1967), 3, Seite 1039-1046 |
| Übergeordnetes Werk: |
volume:155 ; year:1967 ; number:3 ; pages:1039-1046 ; extent:8 |
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| 520 | |a The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. | ||
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(DE-627)NLEJ251566056 (DE-601)aps:e54162524eca8156b95bc362e87372ca1a371df8 DE-627 ger DE-627 rakwb Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide 1967 Online-Ressource 8 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. APS Digital Backfile Archive 1893-2003 Gielisse, P. J. oth Mitra, S. S. oth Plendl, J. N. oth Griffis, R. D. oth Mansur, L. C. oth Marshall, R. oth Pascoe, E. A. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 155(1967), 3, Seite 1039-1046 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:155 year:1967 number:3 pages:1039-1046 extent:8 https://www.tib.eu/de/suchen/id/aps%3Ae54162524eca8156b95bc362e87372ca1a371df8 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 155 1967 3 1039-1046 8 |
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(DE-627)NLEJ251566056 (DE-601)aps:e54162524eca8156b95bc362e87372ca1a371df8 DE-627 ger DE-627 rakwb Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide 1967 Online-Ressource 8 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. APS Digital Backfile Archive 1893-2003 Gielisse, P. J. oth Mitra, S. S. oth Plendl, J. N. oth Griffis, R. D. oth Mansur, L. C. oth Marshall, R. oth Pascoe, E. A. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 155(1967), 3, Seite 1039-1046 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:155 year:1967 number:3 pages:1039-1046 extent:8 https://www.tib.eu/de/suchen/id/aps%3Ae54162524eca8156b95bc362e87372ca1a371df8 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 155 1967 3 1039-1046 8 |
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(DE-627)NLEJ251566056 (DE-601)aps:e54162524eca8156b95bc362e87372ca1a371df8 DE-627 ger DE-627 rakwb Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide 1967 Online-Ressource 8 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. APS Digital Backfile Archive 1893-2003 Gielisse, P. J. oth Mitra, S. S. oth Plendl, J. N. oth Griffis, R. D. oth Mansur, L. C. oth Marshall, R. oth Pascoe, E. A. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 155(1967), 3, Seite 1039-1046 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:155 year:1967 number:3 pages:1039-1046 extent:8 https://www.tib.eu/de/suchen/id/aps%3Ae54162524eca8156b95bc362e87372ca1a371df8 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 155 1967 3 1039-1046 8 |
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(DE-627)NLEJ251566056 (DE-601)aps:e54162524eca8156b95bc362e87372ca1a371df8 DE-627 ger DE-627 rakwb Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide 1967 Online-Ressource 8 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. APS Digital Backfile Archive 1893-2003 Gielisse, P. J. oth Mitra, S. S. oth Plendl, J. N. oth Griffis, R. D. oth Mansur, L. C. oth Marshall, R. oth Pascoe, E. A. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 155(1967), 3, Seite 1039-1046 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:155 year:1967 number:3 pages:1039-1046 extent:8 https://www.tib.eu/de/suchen/id/aps%3Ae54162524eca8156b95bc362e87372ca1a371df8 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 155 1967 3 1039-1046 8 |
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(DE-627)NLEJ251566056 (DE-601)aps:e54162524eca8156b95bc362e87372ca1a371df8 DE-627 ger DE-627 rakwb Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide 1967 Online-Ressource 8 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. APS Digital Backfile Archive 1893-2003 Gielisse, P. J. oth Mitra, S. S. oth Plendl, J. N. oth Griffis, R. D. oth Mansur, L. C. oth Marshall, R. oth Pascoe, E. A. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 155(1967), 3, Seite 1039-1046 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:155 year:1967 number:3 pages:1039-1046 extent:8 https://www.tib.eu/de/suchen/id/aps%3Ae54162524eca8156b95bc362e87372ca1a371df8 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 155 1967 3 1039-1046 8 |
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lattice infrared spectra of boron nitride and boron monophosphide |
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Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide |
| abstract |
The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. |
| abstractGer |
The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. |
| abstract_unstemmed |
The fabrication of highly dense, highly polished compacts consolidated from monocrystalline cubic boron nitride at very high pressures and temperatures has enabled us to record the infrared reflection spectrum of cubic boron nitride from 80 to 550°K. For annealed compacts, the reststrahlen peak reflectivity of about 85% could be obtained. Analysis of data by a damped-oscillator model yields TO (k≃0):1065 cm-1, ε0=7.1, ε∞=4.5; and LO (k≃0):1340 cm-1. Infrared transmission measurements on small single crystals were obtained with a beam condenser. Eleven absorption peaks were observed between 600 and 3000 cm-1. These are assigned as combinations of four Brillouin-zone boundary modes: LO 1232 cm-1, TO 1000 cm-1, LA 685 cm-1, and TA 348 cm-1. The reflection spectrum of hot-pressed compacts of boron monophosphide single crystals measured between 600 and 1000 cm-1 showed a monotonic decrease of reflectivity from about 15 to 9% with an extremely weak reststrahlen band around 825 cm-1. The estimated values of long-wavelength optical modes are TO (k≃0):820 cm-1, and LO (k≃0):835 cm-1. The results thus suggest an extremely low effective ionic charge (∼0.25) for the crystal. Additional deduced physical properties of cubic boron nitride and boron phosphide are discussed. |
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Lattice Infrared Spectra of Boron Nitride and Boron Monophosphide |
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Gielisse, P. J. Mitra, S. S. Plendl, J. N. Griffis, R. D. Mansur, L. C. Marshall, R. Pascoe, E. A. |
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Gielisse, P. J. Mitra, S. S. Plendl, J. N. Griffis, R. D. Mansur, L. C. Marshall, R. Pascoe, E. A. |
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