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Low Loss La5-xSrxTi4+xAl1-xO17 Ceramics for Microwave Dielectric Applications
Yaseen Iqbal,Raz Muhammad 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.3
La5-xSrxTi4+xAl1-xO17 (x = 0, 0.20, 0.25 and 0.30) ceramics were prepared through a mixed oxide solid state sintering route and characterized in terms of phase, crystal structure, microstructure and microwave dielectric properties. La5Ti4AlO17 exhibited reasonable relative permittivity εr ~ 42, a high quality factor Q×fo ~ 18906 GHz but the temperature coefficient of resonance frequency τf ~ −19 ppm/°C was too low for practical applications. In order to tune τf through zero, Sr was substituted for La which increased εr to 47.1, decreased Q×fo to 16678 GHz and decreased negative τf to −4.8 ppm/°C at x = 0.25. The observed decrease in negative τf may be due an increase in tolerance factor and hence change in tilt scheme of BO6 octahedra as a result of substitution of larger cations for smaller cations.
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SARWAR, Danish,SARWAR, Bilal,RAZ, Muhammad Asif,KHAN, Hadi Hassan,MUHAMMAD, Noor,AZHAR, Usman,ZAMAN, Nadeem uz,KASI, Mumraiz Khan Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.12
This empirical research is aimed at testing the relationship of the big five personality traits namely openness to experience, extraversion, consciousness, agreeableness, neuroticism, and risk aversion with the investment intention of individual investors belonging to Balochistan, Pakistan. The primary data is collected through a self-administered questionnaire (a structured form that consists of a series of closed-ended and open-ended questions) from a sample of 397 active individual investors belonging to different districts of the province. The data is empirically analyzed by applying the Partial Least Square (PLS) path modeling technique by using the estimation package available in Smart-PLS. The findings of this study suggest that all the variables are statistically significant with investors' investment intention with risk aversion as the strongest predictor. Moreover, openness to experience, extraversion, consciousness, agreeableness, and risk are significantly and positively related to an investor's investment intention, whereas neuroticism is negatively related to an investor's investment intention. The results extended by this study can be used by financial planners and investment bankers to channelize the available financial resources in diversified portfolios. The results will help financial planners to make available diverse investment alternatives for investors in Balochistan, thus catering to their unique needs. Academia must offer courses on contemporary finance paradigm based on behavioral finance to enable future business graduates to make wise financial decisions.
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