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نوع الوثيقة |
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مقال في مجلة دورية |
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عنوان الوثيقة |
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Determination of microwave electrical characteristics of boron nitride at high temperature Determination of microwave electrical characteristics of boron nitride at high temperature |
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الموضوع |
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Determination of microwave electrical characteristics of boron nitride at high temperature |
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لغة الوثيقة |
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الانجليزية |
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المستخلص |
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The microwave electrical characteristics of a powder Boron Nitride, BN, are determined at high temperature in term of the complex permittivity. The real and the imaginary parts of the complex permittivity are measured using the shift on frequency of the full computerized cavity perturbation technique working in microwave frequency ranges, 615 MHz, 1412 MHz, 2214 MHz, and 3017 MHz, and at temperature from 25 oC to 2000 oC in step of 50 oC. The temperature and frequency-dependent electrical conductivity, , of BN is calculated using the complex permittivity imaginary part,'' measured in the microwave frequency and the temperature ranges of the above technique. The frequency exponent n, and the activation energy, EA, is determined using the calculated electrical conductivity, , in the same microwave frequency and the temperature ranges. |
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ردمد |
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1610-1634 |
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اسم الدورية |
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Physica status solidi. C. Conferences and critical reviews |
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المجلد |
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2 |
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العدد |
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7 |
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سنة النشر |
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1426 هـ
2005 م |
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عدد الصفحات |
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4 |
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نوع المقالة |
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مقالة علمية |
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تاريخ الاضافة على الموقع |
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Thursday, July 2, 2009 |
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الباحثون
| ثريا | Thoria | باحث | دكتوراه | Tbaerky@kau.edu.sa |
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