<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">51152</article-id><article-id pub-id-type="edn">JWJMAR</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Physics and Astronomy</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Физика</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Dielectric Properties of Natural Syrian and Armenian Zeolites</article-title><trans-title-group xml:lang="ru"><trans-title>Диэлектрические свойства натуральных цеолитов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sahakyan</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Саакян</surname><given-names>А. А.</given-names></name></name-alternatives><email>miphj@rudn.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Soulayman</surname><given-names>S. Sh.</given-names></name><name xml:lang="ru"><surname>Сулейман</surname><given-names>С. Ш.</given-names></name></name-alternatives><email>miphj@rudn.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nikogosyan</surname><given-names>S.</given-names></name><name xml:lang="ru"><surname>Никогосян</surname><given-names>С.</given-names></name></name-alternatives><email>miphj@rudn.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yunusova</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Юнусова</surname><given-names>С. А.</given-names></name></name-alternatives><email>miphj@rudn.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Yerevan Physics Institute</institution></aff><aff><institution xml:lang="ru">Ереванский физический институт</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Higher Institute of Applied Sciences and Technology</institution></aff><aff><institution xml:lang="ru">Институт прикладных технологий</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Peoples' Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2007-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2007</year></pub-date><issue>3-4</issue><issue-title xml:lang="en">NO3-4 (2007)</issue-title><issue-title xml:lang="ru">№3-4 (2007)</issue-title><fpage>155</fpage><lpage>161</lpage><history><date date-type="received" iso-8601-date="2026-07-08"><day>08</day><month>07</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2007, Sahakyan A.A., Soulayman S.S., Nikogosyan S., Yunusova S.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2007, Саакян А.А., Сулейман С.Ш., Никогосян С., Юнусова С.А.</copyright-statement><copyright-year>2007</copyright-year><copyright-holder xml:lang="en">Sahakyan A.A., Soulayman S.S., Nikogosyan S., Yunusova S.A.</copyright-holder><copyright-holder xml:lang="ru">Саакян А.А., Сулейман С.Ш., Никогосян С., Юнусова С.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/51152">https://journals.rudn.ru/miph/article/view/51152</self-uri><abstract xml:lang="en"><p>Using an experimental arrangement, designed and manufactured locally, the electric permittivity ${\varepsilon=\varepsilon'-i\varepsilon''}$ and alternative current (a.c.) conductivity $\sigma_{ac}$ of natural Syrian and Armenian zeolites were investigated in order to understand the mechanism of the electrical properties in these materials. The frequency dependence of angle tangents ($\tan\delta=\varepsilon''/\varepsilon'$) of dielectric losses was also studied for both zeolites. The mentioned measuring arrangement has a configuration of an electrical bridge. The data has showed that the dielectric constant $\varepsilon'$ and dielectric loss $\varepsilon''$ for all studied samples decrease when increasing the frequency of the applied electrical field from 200 Hz to 1 MHz. Moreover, it was found out for all studied samples that the \emph{ac} conductivity $\sigma_{ac}$ increases with the frequency of the applied electrical field. The ratio of such increasing depends itself on the applied frequency.</p></abstract><trans-abstract xml:lang="ru"><p>В работе было проведено исследование диэлектрической проницаемости ${\varepsilon=\varepsilon'-i\varepsilon''}$ и проводимости по переменному току $\sigma_{ac}$ натуральных цеолитов из Сирии и Армении с целью изучения электрических свойств этих материалов. Также была исследована зависимость тангенса угла диэлектрических потерь ($\tan\delta=\varepsilon''/\varepsilon'$) от частоты для обоих видов цеолитов. Экспериментальная установка имела вид электрического моста. Полученные данные показали, что диэлектрическая постоянная $\varepsilon'$ и диэлектрические потери $\varepsilon''$ для всех исследованных образцов уменьшаются с увеличением частоты приложенного электрического поля от 200 Гц до 1 МГц. В то же время для всех исследованных образцов проводимость по переменному току $\sigma_{ac}$ увеличивается с ростом частоты. Характер роста зависит от частоты приложенного поля.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Natural zeolite</kwd><kwd>Dielectric properties</kwd><kwd>Electrical conductivity</kwd></kwd-group><funding-group/></article-meta><fn-group/></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Breck D. W. Zeolite Molecular Sieves: Structure, Chemistry and Use. - New York: Wiley, 1974.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Feodorov V. M., Glazun B. A. // USSR AS News, Chem. - 1964. - P. 1930.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>V. M. Feodorov, B. A. Glazun, I. V. Gilenkov, M. M. Dubinin // USSR AS News, Chem. - No 7. - 1966. - P. 1129.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>A. Delgado, A. R. Ruiz-Salvador, G. Rodrigez-Fuentes, A. Berazain // Proc. Conf. Ree. IEEE Inter. Symp. Elect. Insul. Soc. - Montreal, Canada: IEEE New York, 1986. - P. 866.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Concepcion-Rosabal D., Balmaceda-Era J., Rodrigez-Fuentes G. // Micropor. Mesopor. Matter. - Vol. 38. - 2000. - P. 161.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Sayed M. B. // Zeolites. - Vol. 16. - 1996. - P. 157.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Sayed M. B. // Micropor. Mesopor. Matter. - Vol. 37. - 2000. - P. 107.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Simon U., Franke M. E. // Micropor. Mesopor. Matter. - Vol. 41. - 2000. - P. 1.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Borisova M. E., Koikov S. N. The Physics of Dielectrics. - Leningrad, 1979. - (in Russian).</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Abdoulaye A. et al. Some remarks on the ionic conductivity in NaY dehydrated zeolite // Ionics. - Vol. 2. - 1996. - P. 39.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Abdoulaye A. et al. Polarization conductivity in dehydrated zeolite NaY and HY // Micropor. Mesopor. Matter. - Vol. 3. - 1997. - P. 63.</mixed-citation></ref></ref-list></back></article>
