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논문 기본정보
Revealing the oxidation number and local coordination of uranium in Nd2Zr2O7 pyrochlore: A photoluminescence study
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | Journal of luminescence |
| ISSN | 0022-2313,1872-7883 |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | Gupta, S.K.,Reghukumar, C.,Keskar, M.,Kadam, R.M. |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2016-01-01 |
| 초록 | Uranium doped Nd 2 Zr 2 O 7 is synthesized at 800 o C (NUZO-800) using gel-combustion method and characterized using X-ray diffraction, scanning electron microscopy (SEM), X-ray photoelectron microscopy (XPS) and time-resolved photoluminescence (TRPL). As prepared sample was annealed further at 900, 1000, 1100 and 1200 o C leading to increase in the size of the particle and the effect of same has been investigated on the photophysical properties of NUZO. Based on excitation and emission spectroscopy it was inferred that uranium stabilizes as +6 oxidation state in the form of UO 6 6- . XPS measurement also establishes +6 oxidation state of uranium in Nd 2 Zr 2 O 7 . Both emission intensity and photoluminescence (PL) decay time increases with increase in temperature till 1000 o C beyond which lifetime saturates whereas emission intensity decreases. The decay curve shows two different chemical environments for uranate ion in Nd 2 Zr 2 O 7 pyrochlore matrix. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=NART75761380 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
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| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | Nd lt,SUB gt,2 lt,/SUB gt,Zr lt,SUB gt,2 lt,/SUB gt,O lt,SUB gt,7 lt,/SUB gt,. Uranium,Photoluminescence,Annealing temperature,Lifetime |