<?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>2448-5691</journal-id>
<journal-title><![CDATA[Mundo nano. Revista interdisciplinaria en nanociencias y nanotecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Mundo nano]]></abbrev-journal-title>
<issn>2448-5691</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-56912024000100201</article-id>
<article-id pub-id-type="doi">10.22201/ceiich.24485691e.2024.32.69750</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de la temperatura en la formación de nanoestructuras luminiscentes en el KBr:Eu2+]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of temperature on the formation of luminescent nanostructures in KBr:Eu2+]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mejía-Uriarte]]></surname>
<given-names><![CDATA[E. V.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgado-Medina]]></surname>
<given-names><![CDATA[J. N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sato-Berrú]]></surname>
<given-names><![CDATA[R. Y.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarrete]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores-Jiménez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kolokoltsev]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ciencias Aplicadas y Tecnología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ingeniería ]]></institution>
<addr-line><![CDATA[Apodaca Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Física ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>17</volume>
<numero>32</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-56912024000100201&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-56912024000100201&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-56912024000100201&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se presenta el estudio del efecto de la temperatura en la formación de nanoestructuras luminiscentes (NsL) en el monocristal de KBr:Eu2+. Las muestras se almacenaron durante 16 semanas a 100 y 200 °C para formar la fase de Suzuki (FS) y fase dihaluro (FD), respectivamente, la concentración de impurezas en ambos casos fue ~380 ppm. La formación de nanoestructuras fue estudiada por espectroscopía óptica (EO) y las imágenes fueron obtenidas por microscopía de fuerza atómica (AFM). Los espectros de absorción y emisión reportan cambios importantes en 10 Dq para la FS a 11365.2 cm-1, con pico de misión a 433 nm y para la FD 10 Dq a 5319.3 cm-1 con dos picos de emisión a 428.5 y 450.7 nm, característicos de la fase dihaluro. Las imágenes observadas por AFM muestran que las NsL para la FS van desde 40 a 435 nm de diámetro con alturas de 2 a 120 nm, en contraste con la FD donde hay dispersión de tamaños es desde 20 nm hasta de 500 nm de diámetro, pero con alturas limitadas en el intervalo de 1 a 7 nm. Estos resultados comprueban suposiciones teóricas que, efectivamente, la FD es de tipo laminar, los resultados obtenidos están de acuerdo con la literatura reportada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The study of the effect of temperature on the formation of luminescent nanostructures (NsL) in the single crystal of KBr:Eu2+ is presented. The samples were stored for 16 weeks at 100 and 200 °C to form the Suzuki phase (FS) and dihalide phase (FD), respectively, the concentration of impurities in both cases was ~380 ppm. The formation of nanostructures was studied by optical spectroscopy (OE) and the images were obtained by atomic force microscopy (AFM). The absorption and emission spectra report important changes in 10 Dq for the FS at 11365.2 cm-1, with a mission peak at 433 nm, and for the FD 10 Dq at 5319.3 cm-1 with two characteristic emission peaks at 428.5 and 450.7 nm of the dihalide phase. The images observed by AFM show that the NsL for the FS range from 40 to 435 nm in diameter with heights of 9 to 120 nm, in contrast to the FD where there is a dispersion of sizes is from 20 nm to 500 nm in diameter, but with limited heights in the range 1 to 7 nm. These results prove theoretical suppositions that indeed the DF is of the laminar type, the results obtained are in agreement with the literature data.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fase Suzuki]]></kwd>
<kwd lng="es"><![CDATA[fase dihaluro]]></kwd>
<kwd lng="es"><![CDATA[europio]]></kwd>
<kwd lng="es"><![CDATA[nanoestructuras luminiscentes]]></kwd>
<kwd lng="es"><![CDATA[microscopía de fuerza atómica]]></kwd>
<kwd lng="en"><![CDATA[Suzuki phase]]></kwd>
<kwd lng="en"><![CDATA[dihalide phase]]></kwd>
<kwd lng="en"><![CDATA[europium]]></kwd>
<kwd lng="en"><![CDATA[luminescent nanostructures]]></kwd>
<kwd lng="en"><![CDATA[atomic force microscopy]]></kwd>
</kwd-group>
</article-meta>
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