TSEE from MgO Single Crystal Physically Processed

Fernando, José F.; Chubachi, Diniz; Kakiage, Toru; Kawamoto, Jun-ichi; Nakasaku, Satoshi; Yamamoto, Tatsuya; Kawanishi, Masaharu; Watanabe, S.

doi:10.7567/jjaps.24s4.238

Cited by 1 publication

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“…The first peak was observed at a temperature of 450±30 ºC, and the second peak was observed at a temperature of 525±15 ºC (the temperature of the peaks could vary slightly depending on a sample being measured). Similar peaks were also observed by other authors [19]. The detected TSEE peaks indicate that the as-grown films have trapping centres filled with electrons.…”

Section: Resultssupporting

confidence: 89%

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Influence of MeV Gamma Photons on Thermally Stimulated Exoelectron Emission from MgO Films

Romanova

Burve

Dekhtyar

et al. 2021

KEM

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The effect of 6 MeV gamma photons on thermally stimulated exoelectron emission (TSEE) spectra of MgO films was studied. The films were fabricated on Si/SiO2 substrates using the extraction-pyrolytic method. The crystalline structure and surface morphology of the films were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). TSEE spectra of MgO films had emission peaks at about 450 oC and 525 oC. The area under the TSEE peaks increased after repeated TSEE measurements. In the case of gamma-irradiated films, the percentage increase in the area depended on the radiation dose, decreasing linearly with an increase in the radiation dose from 0 to 80 Gy. The results suggest that gamma radiation reduced the density of trapped electrons present in the as-grown MgO films or created competing hole traps that inhibited TSEE from the films.

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Section: Resultssupporting

confidence: 89%

“…Previously, the influence of various types of radiation, such as UV, X-ray, beta particles, on the TSEE spectra of MgO was studied [19][20][21]. This work is devoted to the influence of gamma photons of MeV energy on TSEE from MgO films.…”

Section: Introductionmentioning

confidence: 99%