<?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>1794-1237</journal-id>
<journal-title><![CDATA[Revista EIA]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.EIA.Esc.Ing.Antioq]]></abbrev-journal-title>
<issn>1794-1237</issn>
<publisher>
<publisher-name><![CDATA[Escuela de ingenieria de Antioquia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1794-12372020000100152</article-id>
<article-id pub-id-type="doi">10.24050/reia.v17i33.1356</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Structural and Microstructural Properties of Systems Based on Bi05Na05TiO3]]></article-title>
<article-title xml:lang="es"><![CDATA[Propiedades Estructurales y Microestructurales de Sistemas Basados en Bi05Na05TiO3]]></article-title>
<article-title xml:lang="pt"><![CDATA[Propriedades estruturais e microestruturais de sistemas baseados em Bi05Na05TiO3]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[REVELO-CASTRO]]></surname>
<given-names><![CDATA[MARCELA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[GAONA-JURADO]]></surname>
<given-names><![CDATA[SONIA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[VILLAQUIRÁN-RAIGOZA]]></surname>
<given-names><![CDATA[CLAUDIA FERNANDA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Cauca Grupo de Ciencia y Tecnología de Materiales Cerámicos (CYTEMAC) ]]></institution>
<addr-line><![CDATA[Popayán ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>17</volume>
<numero>33</numero>
<fpage>152</fpage>
<lpage>159</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1794-12372020000100152&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1794-12372020000100152&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1794-12372020000100152&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Perovskites based on bismuth sodium titanates, Bi0 5Na0 5TiO3 (BNT), are incorporated into lead-free piezoelectric materials. Although BNT was discovered five decades ago, many aspects such as the structural complexity and the modifications produced when it is combined with other perovskites are not clearly understood. We studied the structural and microstructural properties of BNT upon addition of BaTiO3 (BT) and SrTiO3 (ST) during sol-gel synthesis. We characterized the ceramic powders by infrared and Raman spectroscopy, X-ray diffraction and scanning electronic microscopy. The addition of BT/ST modified the bonds, generating coexistence and phase transition and confirmed the existence of a morphotropic phase boundary.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las perovskitas basadas en titanato de bismuto y sodio, Bi0 5Na0 5TiO3 (BNT), son implementadas en materiales piezoeléctricos libres de plomo. A pesar de que el BNT fue descubierto hace cinco décadas, no se tiene aún claridad en ciertos temas cruciales como su complejidad estructural y las modificaciones que experimenta cuando se combina con otras perovskitas. En este trabajo se estudió la influencia de la adición de BaTiO3 (BT) y SrTiO3 (ST) sobre las propiedades estructurales y microestructurales del Bi05Na05TiO3 (BNT), usando sol gel como método de síntesis. La caracterización de los polvos cerámicos se realizó por espectroscopia infrarroja y Ramman, difracción de rayos-X y Microscopía electrónica de barrido, lo que permitió concluir que la adición de BT/ST modifica los enlaces, genera coexistencia y transición de fase y confirma la existencia de un contorno de fase morfotrópico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Perovskitas à base de titanatos de sódio de bismuto, Bi0 5Na0 5TiO3 (BNT), são incorporadas em materiais piezoelétricos sem chumbo. Embora o BNT tenha sido descoberto há cinco décadas, muitos aspectos como a complexidade estrutural e as modificações produzidas quando combinados com outros perovskitas não são claramente entendidos. Estudamos as propriedades estruturais e microestruturais do BNT após a adição de BaTiO3 (BT) e SrTiO3 (ST) durante a síntese sol-gel. Caracterizamos os pós cerâmicos por espectroscopia no infravermelho e Raman, difração de raios X e microscopia eletrônica de varredura. A adição de BT / ST modificou as ligações, gerando coexistência e transição de fase e confirmou a existência de um limite de fase morfotrópica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Sol-gel processes]]></kwd>
<kwd lng="en"><![CDATA[BNT]]></kwd>
<kwd lng="en"><![CDATA[Morphotropic Phase Boundary]]></kwd>
<kwd lng="en"><![CDATA[Spectroscopy]]></kwd>
<kwd lng="en"><![CDATA[Raman spectroscopy]]></kwd>
<kwd lng="en"><![CDATA[Rietveld]]></kwd>
<kwd lng="es"><![CDATA[Método Sol-gel]]></kwd>
<kwd lng="es"><![CDATA[BNT]]></kwd>
<kwd lng="es"><![CDATA[Contorno de Fase morfotrópico]]></kwd>
<kwd lng="es"><![CDATA[Espectroscopía]]></kwd>
<kwd lng="es"><![CDATA[Espectroscopía Raman]]></kwd>
<kwd lng="es"><![CDATA[Rietveld]]></kwd>
<kwd lng="pt"><![CDATA[Processos Sol-gel]]></kwd>
<kwd lng="pt"><![CDATA[BNT]]></kwd>
<kwd lng="pt"><![CDATA[limite de fase morfotrópica]]></kwd>
<kwd lng="pt"><![CDATA[espectroscopia]]></kwd>
<kwd lng="pt"><![CDATA[espectroscopia Raman]]></kwd>
<kwd lng="pt"><![CDATA[Rietveld]]></kwd>
</kwd-group>
</article-meta>
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