<?xml version="1.0" encoding="ISO-8859-1"?><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">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2024000100002</article-id>
<article-id pub-id-type="doi">10.31349/revmexfis.70.010502</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Raman spectroscopy and electrical properties of polypyrrole doped dodecylbenzene sulfonic acid/Y2O3 composites]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Irfan]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
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</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mustafa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shakoor]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Niaz]]></surname>
<given-names><![CDATA[A. N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Anwar]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Imran]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Majid]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Bahauddin Zakariya University Institute of Physics ]]></institution>
<addr-line><![CDATA[Multan ]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Health Sciences Nishtar Medical College ]]></institution>
<addr-line><![CDATA[Lahore Punjab]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Govt College University Department of Physics ]]></institution>
<addr-line><![CDATA[Lahore ]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,University of Gujrat Department of Physics ]]></institution>
<addr-line><![CDATA[Punjab ]]></addr-line>
<country>Pakistan</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<volume>70</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2024000100002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2024000100002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2024000100002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The doped dodecylbenzene sulfonic acid (DBSA) with polypyrrole (PPy) and also incorporated an increasing concentration of Y2O3 to obtain the composites of PPy-DBSA-Y2O3 via chemical polymerization technique. The PPy-DBSA-Y2O3 composites formation were confirmed by interaction between PPy-DBSA and Y2O3-particles utilizing Raman spectroscopy. The SEM micrographs show that the composites are in the form of lengthened chains; increase in the particles size as equated with pristine PPy and Y2O3 was also studied. Thermal stability of PPy-DBSA-Y2O3 composites was improved as enhanced the load of Y2O3-particles. The increase in DC conductivity by mixing Y2O3 into PPy-DBSA at all temperatures showed the three-dimensional Mott&#8217;s variable range hopping model. Density of localized states, hopping dimension as well as activation energy are computed and found to be affected due to the presence of Y2O3 in DBSA-PPy. The ESR of Y2O3 (~12 &#937;), PPy (~11.80 &#937;), PPy-DBSA (~11.30 &#937;) and PPy-DBSA-8% Y2O3 composite (~9.50 &#937;). EIS results confirm that the PPy-DBSA-8% Y2O3 composite with a low value of impedance gives a maximum value of electrical conductivity.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Raman analysis]]></kwd>
<kwd lng="en"><![CDATA[EIS]]></kwd>
<kwd lng="en"><![CDATA[PPy-DBSA]]></kwd>
<kwd lng="en"><![CDATA[Y2O3]]></kwd>
<kwd lng="en"><![CDATA[DC Conductivity]]></kwd>
</kwd-group>
</article-meta>
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