Structural and volume changes and their correlation in electron irradiated alkali silicate glasses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43914993" target="_blank" >RIV/60461373:22310/17:43914993 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/17:00510471

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.nimb.2017.02.026" target="_blank" >http://dx.doi.org/10.1016/j.nimb.2017.02.026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nimb.2017.02.026" target="_blank" >10.1016/j.nimb.2017.02.026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural and volume changes and their correlation in electron irradiated alkali silicate glasses

Popis výsledku v původním jazyce

Two binary alkali silicate glasses (15K(2)0.85SiO(2) denoted as K15 and 15Li(2)0.85SiO(2) denoted as Li15) were irradiated by 50 keV electron beams with doses within the range of 2.1-15.9 kC/m(2). Volume changes induced by electron irradiation were monitored by means of Atomic Force Microscopy (AFM). Raman spectra were taken from the irradiated spots to observe structural changes. Volume compaction observed at lower doses was correlated with the increase of the D2 peak. Volume expansion at higher doses was related to migration of alkali ions. Irradiated glasses were annealed at 400 degrees C and 500 degrees C for 60 min. After annealing irradiated spots were again examined by AFM and Raman spectroscopy in order to determine volume and structural relaxation of radiation induced changes. Annealing at higher temperatures resulted in the levelling of the pits created by irradiation, but only for doses below incubation dose. The pits created by doses above incubation dose were not levelled. Annealing caused decrease of D2 peak and shift of the Si-O-Si vibrations band in direction to original structure. Low-frequency region of annealed Li15 glass was undistinguishable from that of pristine glass, while annealing of K15 glass did not result in the full reversion to the original shape. The differences between glasses were attributed to higher T-g of K15 glass. Q-motives bands of both glasses were not completely restored after annealing due to the absence of alkali ions. (C) 2017 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

Structural and volume changes and their correlation in electron irradiated alkali silicate glasses

Popis výsledku anglicky

Two binary alkali silicate glasses (15K(2)0.85SiO(2) denoted as K15 and 15Li(2)0.85SiO(2) denoted as Li15) were irradiated by 50 keV electron beams with doses within the range of 2.1-15.9 kC/m(2). Volume changes induced by electron irradiation were monitored by means of Atomic Force Microscopy (AFM). Raman spectra were taken from the irradiated spots to observe structural changes. Volume compaction observed at lower doses was correlated with the increase of the D2 peak. Volume expansion at higher doses was related to migration of alkali ions. Irradiated glasses were annealed at 400 degrees C and 500 degrees C for 60 min. After annealing irradiated spots were again examined by AFM and Raman spectroscopy in order to determine volume and structural relaxation of radiation induced changes. Annealing at higher temperatures resulted in the levelling of the pits created by irradiation, but only for doses below incubation dose. The pits created by doses above incubation dose were not levelled. Annealing caused decrease of D2 peak and shift of the Si-O-Si vibrations band in direction to original structure. Low-frequency region of annealed Li15 glass was undistinguishable from that of pristine glass, while annealing of K15 glass did not result in the full reversion to the original shape. The differences between glasses were attributed to higher T-g of K15 glass. Q-motives bands of both glasses were not completely restored after annealing due to the absence of alkali ions. (C) 2017 Elsevier B.V. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA15-12580S" target="_blank" >GA15-12580S: Silikátová skla modifikovaná elektronovým svazkem</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Instruments and Methods in Physics Research, Section B

ISSN

0168-583X

e-ISSN

—

Svazek periodika

397

Číslo periodika v rámci svazku

15.4.2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

15-26

Kód UT WoS článku

000399627100003

EID výsledku v databázi Scopus

—