Electron spin resonance in carbon-doped boron nitride

Moore, Arthur; Singer, L. S.

doi:10.1016/0022-3697(72)90016-9

Cited by 63 publications

(44 citation statements)

References 15 publications

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“…The angular dependence of the g factor of the ten-line signal (plotted asg 10 in Fig. 4) is similar to that reported by Moore and Singer, 18 which could be represented by the relation…”

Section: Resultssupporting

confidence: 71%

“…18 The angular dependence of the g factor for the broad signal g B is discussed below. The linewidth AH and the intensity (the product of AH and line height) / of the broad signal in sample D relative to the 0 = 0 value are plotted in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This suggests that the single peak in the Cs-doped sample C was generated through some conversion process of the vacancies, which gave both the ten-line spectrum and the broad signal to clusters of carbon atoms. It has been pointed out 18 ' 21 ' 23 " 25 that the nitrogen vacancies are often accompanied by carbon impurity atoms.…”

Section: Resultsmentioning

confidence: 99%

“…We monitor the extent of intercalation by electron paramagnetic resonance (EPR) and transmission electron microscopy (TEM). Vacancies in BN can be analyzed very sensitively (down to 0.5 ppm deviation from stoichiometry) by EPR 17 ; in fact, a small amount of carbon contamination from the furnace wall was detected 18 during the heating process. However, there has been no previous report, to our knowledge, of the EPR technique applied to detect the intercalation of a BN compound.…”

Section: Freeman and Larkindalementioning

confidence: 99%

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Cesium and bromine doping into hexagonal boron nitride

1986

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Using a two-zone method, the possible formation of an intercalation compound of hexagonal boron nitride (BN) with Cs and Br 2 was investigated. Only a few percent weight increase was observed by doping BN with Cs and Br 2 . The electron paramagnetic resonance (EPR) signal was significantly modified by Cs doping, which is attributed to the reaction between the Cs atoms and spin resonance centers (N vacancies) in BN; no change in the EPR spectra was observed with Br 2 doping. However, the deep blue colored Cs-BN complex reported by Mugiya and co-workers was not obtained with the two-zone method. Though no evidence of systematic intercalation reaction in BN was observed in contrast to graphite host materials, intercalation islands induced by the introduction of Cs atoms were suggested by the transmission electron microscopy (TEM) observations.

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“…The angular dependence of the g factor of the ten-line signal (plotted asg 10 in Fig. 4) is similar to that reported by Moore and Singer, 18 which could be represented by the relation…”

Section: Resultssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Freeman and Larkindalementioning

confidence: 99%

See 2 more Smart Citations

Cesium and bromine doping into hexagonal boron nitride

1986

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“…vacancies) [15,16] during the preparation of single layer h-BN and the deterministic production of defects through electron beam radiation [17] have been shown to have considerable effects on electronic and magnetic properties of h-BN. While both nitrogen (N v ) and boron (B v ) vacancies can act as paramagnetic centres in h-BN [18], electron paramagnetic resonance (EPR) studies indicate that N v are more important [19][20][21][22][23][24]. Two types of paramagnetic centres have been identified: (i) three-boron centres (TBC) in which an unpaired electron interacts with three equivalent boron (B 11 ) nuclei, producing 10-line EPR spectra, and (ii) one-boron centres (OBC) in which oxidative damage at the centre forces the unpaired electron to interact with only a single B 11 , producing 4-line EPR spectra.…”

Section: Introductionmentioning

confidence: 99%

Defect states in hexagonal boron nitride: Assignments of observed properties and prediction of properties relevant to quantum computation

2018

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Processing of Blue Boron Nitride Thin Films with a Solid–Gas Reaction

Mokhtari

Park

Roesky

et al. 1996

Chemistry A European J

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For the first time, solid-gas reaction techniques have been used for the synthesis and processing of thin films of boron nitride. Clear to intensely colored blue BN films were grown on Si(100) substrates by the transformation of borazine (B3N,H,) with a titanium complex as initiator under flowing nitrogen gas. The thickness of the films ranged from 70 to lOOnm, as determined by Rutherford backscattering (RBS) and atomic force microscopy (AFM) analyses. The intensity of the blue color of the thin film can be correlated to its thickness. The composition of the film determined by RBS studies corresponds to the stoichiometric formula B0~49N0,4500,06r and N/B and O/B ratios are found to be 0.92 and 0.12, respectively. Nitrogen contents determined by nuclear reaction analysis agree well with the RBS results. Moreover, Auger electron spectroscopy (AES) measurements show that no titanium is present in the films and confirm the composition determined by RBS studies. X-ray photoelectron spectroscopy (XPS) shows the presence of boron and nitrogen in the blue BN film. Electron spin resonance (ESR) experiments at 293 and 12 K indicate a single broad signal with a g value (g = 2.005) close to that of a free electron. This synthetic approach provides opportunities for the preparation of new thin-film materials and for the fundamental study of solid-gas reactions.

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Electron spin resonance in carbon-doped boron nitride

Cited by 63 publications

References 15 publications

Cesium and bromine doping into hexagonal boron nitride

Cesium and bromine doping into hexagonal boron nitride

Defect states in hexagonal boron nitride: Assignments of observed properties and prediction of properties relevant to quantum computation

Processing of Blue Boron Nitride Thin Films with a Solid–Gas Reaction

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