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Synthesis and characterization of vanadium and iron tellurite glasses for applications as thermal sensors
Solid State Sciences ( IF 3.5 ) Pub Date : 2021-02-09 , DOI: 10.1016/j.solidstatesciences.2021.106564
Navjot Kaur , Atul Khanna , Rajinder Kaur , Ruchika , Deeksha Salhotra

Semiconducting transition metal oxide tellurite glasses: xV2O5-(100-x)TeO2 (x = 10, 30, 40, 50 and 55, 60, 65 and 70 mol%), xCuO-50V2O5-(50-x)TeO2 (x = 1, 3 and 5 mol%), xFe2O3-(100-x)TeO2 (x = 10 and 20 mol%) and xFe2O3–45V2O5-(55-x)TeO2 (x = 5 and 10 mol%) were prepared by normal and splat quenching techniques. The thermal, electrical and structural properties of glasses were characterized. The highest electronic conduction is in the xV2O5-(100-x)TeO2 glasses; the room temperature conductivity of this glass series increases from 9.21 × 10−9 Ω−1m−1 to 3.30 × 10−4 Ω−1m−1 upon increasing V2O5 concentration from 10 to 70 mol%. Iron tellurite glasses also show a large enhancement of conductivity with an increase in Fe2O3 concentration. The glass transition temperature (Tg) of vanadium tellurite glasses decreases, while those of iron tellurite glasses increases with an increase in V2O5 and Fe2O3 concentrations respectively. The incorporation of Cu and Fe ions in xV2O5-(100-x)TeO2 increases Tg significantly but it suppresses the electrical conductivity. Vanadium tellurite glasses show the growth of α-TeO2 crystals in the glass matrix on irradiation with 488 nm Ar ion laser. Transition metal oxide tellurite glasses have potential application as thermal and body temperature sensors due to their large temperature coefficient of resistance in the range of −3.04 to −2.26% K−1.



中文翻译:

钒和铁碲酸盐玻璃的合成和表征,用作热传感器

半导体过渡金属氧化物碲酸盐玻璃:xV 2 O 5-(100-x)TeO 2(x = 10、30、40、50和55、60、65和70 mol%),xCuO-50V 2 O 5-(50 -x)TeO 2(x = 1、3和5 mol%),xFe 2 O 3-(100-x)TeO 2(x = 10和20 mol%)和xFe 2 O 3 –45V 2 O 5-(通过常规和快速淬火技术制备55-x)TeO 2(x = 5和10mol%)。对玻璃的热,电和结构性能进行了表征。最高的电子传导在xV 2 O中5-(100-x)TeO 2眼镜; 的该玻璃系列增加室温电导率从9.21×10 -9  Ω -1-1至3.30×10 -4  Ω -1-1时增加V 2 ø 5从10浓度〜70摩尔%。铁碲酸盐玻璃还显示出随着Fe 2 O 3浓度的增加导电性大大增强。随着V 2 O 5和Fe的增加,钒碲酸盐玻璃的玻璃化转变温度(T g)降低,而铁碲酸盐玻璃的玻璃化转变温度升高。分别为2 O 3浓度。在xV 2 O 5-(100-x)TeO 2中掺入Cu和Fe离子显着增加了T g,但抑制了电导率。钒碲酸盐玻璃表明α-的TeO的生长2个结晶在玻璃基质上照射488nm的Ar离子激光器。过渡金属氧化物碲酸盐玻璃由于其大的电阻温度系数在-3.04至-2.26%K -1范围内,因此有潜力作为热传感器和人体温度传感器。

更新日期:2021-02-24
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