[논문]Dipole defects in beryl

Holanda, B A; Cordeiro, R C; Blak, A R

doi:10.1088/1757-899X/15/1/012092

Dipole defects in beryl 원문보기

IOP conference series. Materials science and engineering, v.15, 2010년, pp.012092 -

Holanda, B A , Cordeiro, R C , Blak, A R

Abstract ▼ AI-Helper

Dipole defects in gamma irradiated and thermally treated beryl (Be3Al2Si6O18) samples have been studied using the Thermally Stimulated Depolarization Currents (TSDC) technique. TSDC experiments were performed in pink (morganite), green (emerald), blue (aquamarine) and colourless (goshenite) natural beryl. TSDC spectra present dipole peaks at 190K, 220K, 280K and 310K that change after gamma irradiation and thermal treatments. In morganite samples, for thermal treatments between 700K and 1100K, the 280K peak increase in intensity and the band at 220K disappears. An increase of the 280K peak and a decrease of the 190K peak were observed in the TSDC spectra of morganite after a gamma irradiation of 25kGy performed after the thermal treatments. In the case of emerald samples, thermal treatments enhanced the 280K peak and gamma irradiation partially destroyed this band. The goshenite TSDC spectra present only one band at 280K that is not affected either by thermal treatments or by gamma irradiation. All the observed peaks are of dipolar origin because the intensity of the bands is linearly dependent on the polarization field, behaviour of dipole defects. The systematic study, by means of TSDC measurements, of ionizing irradiation effects and thermal treatments in these crystals makes possible a better understanding of the role played by the impurities in beryl crystals.

참고문헌 (13)

Wood, D. L., Nassau, K.. Infrared Spectra of Foreign Molecules in Beryl. The Journal of chemical physics, vol.47, no.7, 2220-2228.

상세보기
Andersson, Lars Olov. The positions of H+, Li+ and Na+ impurities in beryl. Physics and chemistry of minerals, vol.33, no.6, 403-416.

상세보기
1982 12 285 Revista Brasileira de Física Blak A R
Blak, Ana Regina, Isotani, Sadao, Watanabe, Shigueo. Optical absorption and electron spin resonance in blue and green natural beryl. Physics and chemistry of minerals, vol.8, no.4, 161-166.

상세보기
1979 10.1007/3540095950_10 37 135 Thermally Stimulated Relaxation in Solids (Topics in Applied Physics) Vanderschueren J
1979 10.1007/978-3-540-34846-7_3 33 81 Electrets Van Turnhout J
Vianna, Carlos Antonio Pereira, ValéRio, Mário Ernesto Giroldo, Blak, Ana Regina. The role played by hydrogen in the ionic thermocurrents of beryl. Radiation effects and defects in solids, vol.119, no.2, 603-608.

상세보기
Vianna, Carlos, Blak, Ana Regina. Thermally stimulated depolarization currents in natural beryl. Radiation effects and defects in solids, vol.134, no.1, 315-319.

상세보기
1974 28 20 Lapidary J. Nassau K
Viana, R. R., Jordt-Evangelista, H., da Costa, G. Magela, Stern, W. B.. Characterization of beryl (aquamarine variety) from pegmatites of Minas Gerais, Brazil. Physics and chemistry of minerals, vol.29, no.10, 668-679.

상세보기
Parkin, Kathleen M., Loeffler, Bruce M., Burns, Roger G.. M�ssbauer spectra of kyanite, aquamarine, and cordierite showing intervalence charge transfer. Physics and chemistry of minerals, vol.1, no.3, 301-311.

상세보기
Don Goldman, S., Rossman, George R., Parkin, Kathleen M.. Channel constituents in beryl. Physics and chemistry of minerals, vol.3, no.3, 225-235.

상세보기
Edgar, A., Vance, E. R.. Electron paramagnetic resonance, optical absorption, and magnetic circular dichroism studies of the CO 3 ? molecular-ion in irradiated natural beryl. Physics and chemistry of minerals, vol.1, no.2, 165-178.

상세보기

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Dipole defects in beryl 원문보기

Abstract ▼ AI-Helper

참고문헌 (13)

이 논문을 인용한 문헌

관련 콘텐츠

원문 보기

원문 URL 링크

오픈액세스(OA) 유형

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트