Spins and microstructure of amorphous carbon

作者: H.J von Bardeleben , J.L Cantin , K Zellama , A Zeinert

DOI: 10.1016/S0925-9635(03)00013-X

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摘要: Abstract Variable frequency EPR measurements between 9 and 285 GHz show that a-C layers with the exception of strongly polymer-like present even at highest a simple, single line spectrum for which exchange interactions are still dominating. The high spectra characterized by temperature dependent g -factor anisotropies, numerical value varies particular samples. From angular variation, microwave dependence this anisotropy is attributed to influence demagnetizing fields 4 K order 100 G diamond like layers.

参考文章(12)
D. C. Cronemeyer, Demagnetization factors for general ellipsoids Journal of Applied Physics. ,vol. 70, pp. 2911- 2914 ,(1991) , 10.1063/1.349315
A.Yu. Bresgunov, O.G. Poluektov, Ya.S. Lebedev, A.L. Barra, L.C. Brunel, J.B. Robert, Very high field and multifrequency ESR study of a coal sample Chemical Physics Letters. ,vol. 175, pp. 621- 623 ,(1990) , 10.1016/0009-2614(90)85592-Z
J. M. Macfarlane, I. S. McLintock, J. C. Orr, Antiferromagnetism in Amorphous Carbon Films Physica Status Solidi (b). ,vol. 55, pp. 273- 278 ,(1973) , 10.1002/PSSB.2220550128
H. J. von Bardeleben, J. L. Cantin, A. Zeinert, B. Racine, K. Zellama, P. N. Hai, Spins and microstructure of hydrogenated amorphous carbon: A multiple frequency electron paramagnetic resonance study Applied Physics Letters. ,vol. 78, pp. 2843- 2845 ,(2001) , 10.1063/1.1370980
M. Fanciulli, G. Fusco, A. Tagliaferro, Insight on the microscopical structure of a-C and a-C:H thin films through electron spin resonance analysis Diamond and Related Materials. ,vol. 6, pp. 725- 729 ,(1997) , 10.1016/S0925-9635(96)00610-3
R. C. Barklie, M. Collins, S. R. P. Silva, EPR linewidth variation, spin relaxation times, and exchange in amorphous hydrogenated carbon Physical Review B. ,vol. 61, pp. 3546- 3554 ,(2000) , 10.1103/PHYSREVB.61.3546
A. Zeinert, H.-J. von Bardeleben, R. Bouzerar, An optical absorption and electron spin resonance study in hydrogenated amorphous carbon prepared by radio frequency sputtering Diamond and Related Materials. ,vol. 9, pp. 728- 731 ,(2000) , 10.1016/S0925-9635(99)00270-8
J. Robertson, Defects in diamond-like carbon Physica Status Solidi (a). ,vol. 186, pp. 177- 185 ,(2001) , 10.1002/1521-396X(200108)186:2<177::AID-PSSA177>3.0.CO;2-6
M.M. Golzan, D.R. McKenzie, D.J. Miller, S.J. Collocott, G.A.J. Amaratunga, MAGNETIC AND SPIN PROPERTIES OF TETRAHEDRAL AMORPHOUS-CARBON Diamond and Related Materials. ,vol. 4, pp. 912- 916 ,(1995) , 10.1016/0925-9635(94)00250-9
B. Druz, I. Zaritskiy, Y. Yevtukhov, A. Konchits, M. Valakh, S. Kolesnik, B. Shanina, V. Visotski, Filtered Cathodic Arc Deposited Diamond-Like Carbon: Electron Spin Resonance (ESR) and Raman Spectroscopy MRS Proceedings. ,vol. 593, pp. 249- ,(1999) , 10.1557/PROC-593-249