<?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>2304-0106</journal-id>
<journal-title><![CDATA[Anales de la Academia de Ciencias de Cuba]]></journal-title>
<abbrev-journal-title><![CDATA[Anales de la ACC]]></abbrev-journal-title>
<issn>2304-0106</issn>
<publisher>
<publisher-name><![CDATA[Academia de Ciencias de Cuba]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2304-01062022000100010</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Nuevas piezocerámicas libres de plomo basadas en KNN]]></article-title>
<article-title xml:lang="en"><![CDATA[New lead-free piezoceramics based on KNN]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Portelles Rodríguez]]></surname>
<given-names><![CDATA[Jorge J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuentes Betancourt]]></surname>
<given-names><![CDATA[Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dolores Durruthy]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Noda]]></surname>
<given-names><![CDATA[René]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivero Ramirez]]></surname>
<given-names><![CDATA[Doris]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palmero]]></surname>
<given-names><![CDATA[Norma]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández García]]></surname>
<given-names><![CDATA[Moisés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Armas Figueroa]]></surname>
<given-names><![CDATA[Yondriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rebellón]]></surname>
<given-names><![CDATA[Julia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de La Habana Facultad de Física ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto de Cibernética, Matemática y Física Aplicada  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de La Habana Instituto Superior de Ciencias y Tecnologías Aplicadas ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>12</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2304-01062022000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2304-01062022000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2304-01062022000100010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  El presente trabajo, muestra la descripción de los métodos de obtención empleados para lograr piezocerámicas libres de plomo KNN dopadas: (K0.5Na0.5)0.95La0.05(Nb0.9Ti0.05)O2.9 y (K0.44Na0.52Li0.04)0.97La0.01Nb0.9Ta0.103 y la caracterización física de estos. El objetivo fue adquirir un método de obtención reproducible que propiciará buenas propiedades físico-químicas en los sistemas empleados y emplear nuevos dopantes como el Ti, de un menor precio en el mercado, y el La, no trabajados hasta el momento en la literatura consultada, para modificar y controlar sus propiedades físico-químicas.  Métodos:  Se emplea un método combinado de reacción del crecimiento del grano, (RTGG), para la obtención del precursor NaNbO3 y partiendo de éste lo hacemos reaccionar mediante estado sólido con los demás reactivos simplificando métodos existentes, y la caracterización: dieléctrica, transiciones de fases, caracterización estructural por Difracción de rayos X, y microscopia de piezofuerza (PFM).  Resultados:  Se obtienen piezocerámicas dopadas con Ti-La, fotoluminicentes con buena potencia de emisión de luz azul y piezoeléctricas KNN dopadas Li- La-Ta. En ambas composiciones presentadas; el dopar con La, se regula el crecimiento del grano y modifica las propiedades dieléctricas y hace disminuir las temperaturas de transición. En el compuesto KNN dopado con Li-La-Ta se obtiene coexistencia de fases a temperatura ambiente y buenas propiedades dieléctricas y cierta anisotropía en la orientación de los dominios. Los resultados experimentales realizados por (PFM), demuestran excelentes constantes piezoeléctricas def = 166 pCN-1 comparados con las mejores cerámicas PZT. Conclusiones: los resultados presentados potencian la utilización de éstos como emisores de luz ferroeléctricos, así como transductores libres de plomo. Ambas composiciones, aún no se han homologado internacionalmente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  This paper shows the description of the methods used to obtain doped lead-free KNN piezoceramics: (K0.5Na0.5)0.95La0.05(Nb0.9Ti0.05)O2.9 and (K0.44Na0.52Li0.04)0.97La0.01Nb0.9Ta0.103 piezoceramics, and their physical characterization. The objective was to achieve a reproducible obtaining method that will promote good physicochemical properties in the systems used and to use new dopants such as Ti, with a lower price in the market, and La, not studied yet in the literature consulted, to modify and control their physicochemical properties.  Methods:  A combined method of grain growth reaction is used, to obtain the precursor NaNbO3 and from this we make it react in solid state with the other reactants, thus simplifying existent methods, and the characterization: dielectric, phase transition, structural characterizations by X-ray diffraction and piezoforce microscopy (PFM).  Results:  The photo-luminescence piezoceramics doped with La and Ti show a good power emission of blue light. In both compositions presented, the doping with the La cation regulates the grain growth, modifies dielectric properties, and lowers transition temperatures. In the KNN compound doped with Li-La-Ta, the phase coexistence at room temperature and good dielectric properties and a certain anisotropy in the orientation of the domains are obtained. The experimental results carried out by PFM demonstrate excellent piezoelectric constants def = 166 pCN-1 compared to the best PZT ceramics. Conclusions: the results presented favor their potential use as ferroelectric light emitters, as well as lead-free transducers. Neither composition has been internationally accredited yet.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[PFM]]></kwd>
<kwd lng="es"><![CDATA[ferroeléctricos]]></kwd>
<kwd lng="es"><![CDATA[permitividad]]></kwd>
<kwd lng="es"><![CDATA[KNN]]></kwd>
<kwd lng="en"><![CDATA[PFM]]></kwd>
<kwd lng="en"><![CDATA[Ferroelectrics]]></kwd>
<kwd lng="en"><![CDATA[Permittivity]]></kwd>
<kwd lng="en"><![CDATA[KNN]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saito]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Lead-free piezoceramics]]></article-title>
<source><![CDATA[Nature]]></source>
<year>2004</year>
<volume>432</volume>
<page-range>84-7</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Xu Li]]></surname>
<given-names><![CDATA[Fe Zhang]]></given-names>
</name>
</person-group>
<source><![CDATA[On devices lead sequestration for perovskite solar cells]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Dielectric spectroscopic study of (K0.44Na0.52Li0.04)0.97 La0.01 Nb0.9 Ta0.103 ceramics]]></source>
<year>2017</year>
<page-range>122</page-range><publisher-name><![CDATA[Journal of Applied Physics]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Raymond]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Heiras]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ostos]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Arizaga]]></surname>
<given-names><![CDATA[G.G]]></given-names>
</name>
<name>
<surname><![CDATA[Siqueiros]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of the sintering condictions on the microstructural, dielectric and piezoelectric properties of La Doped KNNT a Ceramics]]></article-title>
<source><![CDATA[RCF]]></source>
<year>2014</year>
<volume>31</volume>
<page-range>10</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Durruthy Rodríguez]]></surname>
<given-names><![CDATA[M.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández García]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández Landaverde]]></surname>
<given-names><![CDATA[M.A]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez Cardona]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Yáñez Limón]]></surname>
<given-names><![CDATA[J.M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Strong emission of blue-yellow-red region of La and Ti modified KNaNbO3 ferroelectric ceramics]]></article-title>
<source><![CDATA[of Advanced Ceramics]]></source>
<year>2015</year>
<volume>4</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>183-9</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Durruthy]]></surname>
<given-names><![CDATA[MD.]]></given-names>
</name>
<name>
<surname><![CDATA[Gervacio]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Yáñez Limón]]></surname>
<given-names><![CDATA[JM.]]></given-names>
</name>
<name>
<surname><![CDATA[Espinosa Beltrán]]></surname>
<given-names><![CDATA[EJ.]]></given-names>
</name>
<name>
<surname><![CDATA[Raymond]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Siqueiros]]></surname>
<given-names><![CDATA[J. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[PFM characterization of (Ka0.5Na0.5)0.95La0.05 (Nb0.9Ti0.05)O2.9 ceramic lead free]]></article-title>
<source><![CDATA[Applied Physics A]]></source>
<year>2013</year>
<volume>107</volume>
<page-range>733-8</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Durruthy]]></surname>
<given-names><![CDATA[MD.]]></given-names>
</name>
<name>
<surname><![CDATA[H&#8217;Monk]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Raymond]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Heiras]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
<name>
<surname><![CDATA[Siqueiros]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dielectric and Piezoelectric Properties of KNN Ceramic Compound Doped With Li, La, Ta]]></article-title>
<source><![CDATA[Appl Phys A]]></source>
<year>2015</year>
<volume>118</volume>
<page-range>709-15</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Palmero]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[López Nodac]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Raymond]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ostos C, Siqueiros JM. Dielectric Spectroscopic Study on KNNLiLa obtained by RTGG]]></article-title>
<source><![CDATA[App. Phys]]></source>
<year>2017</year>
<numero>122</numero>
<issue>122</issue>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Gervacio]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
<name>
<surname><![CDATA[Ostos]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Raymond]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Heiras]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[MP.]]></given-names>
</name>
<name>
<surname><![CDATA[Siqueiros]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Li, La, Ta doped KNN ceramics obtained by RTGG]]></article-title>
<source><![CDATA[Ferroelectrics]]></source>
<year>2018</year>
<numero>534</numero>
<issue>534</issue>
<page-range>175-82</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gervacio Arciniega J]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Murillo]]></surname>
<given-names><![CDATA[EA.]]></given-names>
</name>
<name>
<surname><![CDATA[Toledano Solano]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz Valeriano]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Palomino]]></surname>
<given-names><![CDATA[MA.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Discrimination of ferroelectric from a non -ferroelectric response in PFM by phase analyses at the harmonics of the applied Vac]]></article-title>
<source><![CDATA[J. Aplys. Phys]]></source>
<year>2020</year>
<volume>127</volume>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rebellón Watson]]></surname>
<given-names><![CDATA[JF.]]></given-names>
</name>
<name>
<surname><![CDATA[López Noda]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Fuentes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Morphology of grain in KNNLILATA 0.1 piezoelectrics obtained by NaNbO3 precursor]]></source>
<year>2020</year>
<publisher-name><![CDATA[RCF]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rivero]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Benavides]]></surname>
<given-names><![CDATA[JI.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Quiles]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Instalación semiautomática para medir el lazo de histéresis en materiales ferroeléctricos]]></article-title>
<source><![CDATA[Revista Cubana de Física]]></source>
<year>2008</year>
<volume>25</volume>
<numero>2B</numero>
<issue>2B</issue>
<page-range>133-5</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rivero Ramírez]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Duc Bac]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles Rodríguez]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Rivero Balseiro]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<source><![CDATA[Instalación automatizada para medir las características del lazo de histéresis en materiales ferroelectricos]]></source>
<year>2013</year>
<publisher-loc><![CDATA[La Habana, Cuba ]]></publisher-loc>
<publisher-name><![CDATA[Memorias de la XV Convención y feria internacional de informática 2013]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rivero Ramírez]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Portelles Rodríguez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivero Balceiro]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Duc-Bac]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz Castro]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Siqueiros Beltrones]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Quilles Latorre]]></surname>
<given-names><![CDATA[FJ]]></given-names>
</name>
<name>
<surname><![CDATA[Benavidez Benítez]]></surname>
<given-names><![CDATA[JI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Instalación Automatizada para Medir las Características del Lazo de Histéresis en Materiales Ferroeléctricos]]></article-title>
<source><![CDATA[Rev. Cub. Fis.]]></source>
<year>2014</year>
<volume>31</volume>
<numero>1E</numero>
<issue>1E</issue>
<page-range>47-9</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
