Crystal growth and structure of La3M4+Ga5O14 (M=Ti, Zr, Hf)
Identifieur interne : 001323 ( Istex/Corpus ); précédent : 001322; suivant : 001324Crystal growth and structure of La3M4+Ga5O14 (M=Ti, Zr, Hf)
Auteurs : H. Takeda ; T. Kato ; V. I. Chani ; K. Shimamura ; T. FukudaSource :
- Journal of Alloys and Compounds [ 0925-8388 ] ; 1999.
English descriptors
- KwdEn :
- Acta crystallogr, Belokoneva, Crystal chemistry, Crystal growth, Crystal structure, Diffraction data, Elsevier science, Fukuda, Growth methods, Growth result, Interatomic distances, Ltig, Ltig phase, Many cracks, Many inclusions, Octahedral, Octahedral site, Partial occupation, Peritectic compounds, Seed crystal, Single crystals, Smaller tetrahedral, Structural features, Structure analysis, Takeda, Tetrahedral, Tetrahedral sites, Tetravalent cations, Thomson cube, Tiga, Tohoku university, Type compound, Type crystals, Type structure, Unit cell parameters.
- Teeft :
- Acta crystallogr, Belokoneva, Crystal chemistry, Crystal growth, Crystal structure, Diffraction data, Elsevier science, Fukuda, Growth methods, Growth result, Interatomic distances, Ltig, Ltig phase, Many cracks, Many inclusions, Octahedral, Octahedral site, Partial occupation, Peritectic compounds, Seed crystal, Single crystals, Smaller tetrahedral, Structural features, Structure analysis, Takeda, Tetrahedral, Tetrahedral sites, Tetravalent cations, Thomson cube, Tiga, Tohoku university, Type compound, Type crystals, Type structure, Unit cell parameters.
Abstract
Abstract: La3M4+Ga5O14 (M=Ti, Zr, Hf) compounds were crystallized using the micro-pulling down and Czochralski techniques. Both growth methods showed that these three crystals are peritectic compounds. The structure of La3TiGa5O14 (LTiG) crystal was refined using single-crystal X-ray diffraction data. LTiG was observed to be isostructural to Ca3Ga2Ge4O14 (P321 (No.150), Z=1) and the lattice parameters are a=8.223(1), c=5.109(1) Å. The Ti atoms were found to occupy octahedral (1a) and tetrahedral (3f) sites coordinated by six and four oxygen atoms, respectively.
Url:
DOI: 10.1016/S0925-8388(99)00194-2
Links to Exploration step
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<front><div type="abstract" xml:lang="en">Abstract: La3M4+Ga5O14 (M=Ti, Zr, Hf) compounds were crystallized using the micro-pulling down and Czochralski techniques. Both growth methods showed that these three crystals are peritectic compounds. The structure of La3TiGa5O14 (LTiG) crystal was refined using single-crystal X-ray diffraction data. LTiG was observed to be isostructural to Ca3Ga2Ge4O14 (P321 (No.150), Z=1) and the lattice parameters are a=8.223(1), c=5.109(1) Å. The Ti atoms were found to occupy octahedral (1a) and tetrahedral (3f) sites coordinated by six and four oxygen atoms, respectively.</div>
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<abstract>La3M4+Ga5O14 (M=Ti, Zr, Hf) compounds were crystallized using the micro-pulling down and Czochralski techniques. Both growth methods showed that these three crystals are peritectic compounds. The structure of La3TiGa5O14 (LTiG) crystal was refined using single-crystal X-ray diffraction data. LTiG was observed to be isostructural to Ca3Ga2Ge4O14 (P321 (No.150), Z=1) and the lattice parameters are a=8.223(1), c=5.109(1) Å. The Ti atoms were found to occupy octahedral (1a) and tetrahedral (3f) sites coordinated by six and four oxygen atoms, respectively.</abstract>
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<notesStmt><note type="content">Fig. 1: Projections of the La3MGa5O14 structure along the [010] direction (a), and normal to the [001] direction (b).</note>
<note type="content">Fig. 2: (a) La3TiGa5O14, (b) La3ZrGa5O14 and (c) La3HfGa5O14 crystals grown by the μ-PD method.</note>
<note type="content">Fig. 3: La3TiGa5O14 crystal grown by Cz technique using the residual melt after the first growth.</note>
<note type="content">Fig. 4: An ORTEP [17] drawing of part of the La3TiGa5O14 structure. The thermal ellipsoids enclose an 80% probability distribution.</note>
<note type="content">Table 1: Crystal data and intensity collection for La3TiGa5O14</note>
<note type="content">Table 2: Positional and anisotropic thermal parameters for La3TiGa5O14</note>
<note type="content">Table 3: Selected interatomic distances (Å) for La3TiGa5O14</note>
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M<ce:sup>4+</ce:sup>
Ga<ce:inf>5</ce:inf>
O<ce:inf>14</ce:inf>
(M=Ti, Zr, Hf)</ce:title>
<ce:author-group><ce:author><ce:given-name>H.</ce:given-name>
<ce:surname>Takeda</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
<ce:cross-ref refid="CORR1">*</ce:cross-ref>
<ce:e-address>hirodx@lexus.imr.tohoku.ac.jp</ce:e-address>
</ce:author>
<ce:author><ce:given-name>T.</ce:given-name>
<ce:surname>Kato</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>V.I.</ce:given-name>
<ce:surname>Chani</ce:surname>
<ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>K.</ce:given-name>
<ce:surname>Shimamura</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>T.</ce:given-name>
<ce:surname>Fukuda</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:affiliation id="AFF1"><ce:label>a</ce:label>
<ce:textfn>Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF2"><ce:label>b</ce:label>
<ce:textfn>Center for Interdisciplinary Research, Tohoku University, Sendai 980-8577, Japan</ce:textfn>
</ce:affiliation>
<ce:correspondence id="CORR1"><ce:label>*</ce:label>
<ce:text>Corresponding author. Tel.: +81-22-215-2103; fax: +81-22-215-2104</ce:text>
</ce:correspondence>
</ce:author-group>
<ce:date-received day="11" month="3" year="1999"></ce:date-received>
<ce:abstract><ce:section-title>Abstract</ce:section-title>
<ce:abstract-sec><ce:simple-para>La<ce:inf>3</ce:inf>
M<ce:sup>4+</ce:sup>
Ga<ce:inf>5</ce:inf>
O<ce:inf>14</ce:inf>
(M=Ti, Zr, Hf) compounds were crystallized using the micro-pulling down and Czochralski techniques. Both growth methods showed that these three crystals are peritectic compounds. The structure of La<ce:inf>3</ce:inf>
TiGa<ce:inf>5</ce:inf>
O<ce:inf>14</ce:inf>
(LTiG) crystal was refined using single-crystal X-ray diffraction data. LTiG was observed to be isostructural to Ca<ce:inf>3</ce:inf>
Ga<ce:inf>2</ce:inf>
Ge<ce:inf>4</ce:inf>
O<ce:inf>14</ce:inf>
(<ce:italic>P</ce:italic>
321 (No.150), <ce:italic>Z</ce:italic>
=1) and the lattice parameters are <ce:italic>a</ce:italic>
=8.223(1), <ce:italic>c</ce:italic>
=5.109(1) Å. The Ti atoms were found to occupy octahedral (1<ce:italic>a</ce:italic>
) and tetrahedral (3<ce:italic>f</ce:italic>
) sites coordinated by six and four oxygen atoms, respectively.</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
<ce:keywords><ce:section-title>Keywords</ce:section-title>
<ce:keyword><ce:text>Gallates</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Crystal growth</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Crystal structure</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Single crystal</ce:text>
</ce:keyword>
<ce:keyword><ce:text>X-ray diffraction</ce:text>
</ce:keyword>
</ce:keywords>
</head>
</converted-article>
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<mods version="3.6"><titleInfo><title>Crystal growth and structure of La3M4+Ga5O14 (M=Ti, Zr, Hf)</title>
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<titleInfo type="alternative" contentType="CDATA"><title>Crystal growth and structure of La</title>
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<name type="personal"><namePart type="given">H.</namePart>
<namePart type="family">Takeda</namePart>
<affiliation>E-mail: hirodx@lexus.imr.tohoku.ac.jp</affiliation>
<affiliation>Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan</affiliation>
<description>Corresponding author. Tel.: +81-22-215-2103; fax: +81-22-215-2104</description>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">T.</namePart>
<namePart type="family">Kato</namePart>
<affiliation>Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan</affiliation>
<role><roleTerm type="text">author</roleTerm>
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<name type="personal"><namePart type="given">V.I.</namePart>
<namePart type="family">Chani</namePart>
<affiliation>Center for Interdisciplinary Research, Tohoku University, Sendai 980-8577, Japan</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">K.</namePart>
<namePart type="family">Shimamura</namePart>
<affiliation>Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">T.</namePart>
<namePart type="family">Fukuda</namePart>
<affiliation>Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan</affiliation>
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<abstract lang="en">Abstract: La3M4+Ga5O14 (M=Ti, Zr, Hf) compounds were crystallized using the micro-pulling down and Czochralski techniques. Both growth methods showed that these three crystals are peritectic compounds. The structure of La3TiGa5O14 (LTiG) crystal was refined using single-crystal X-ray diffraction data. LTiG was observed to be isostructural to Ca3Ga2Ge4O14 (P321 (No.150), Z=1) and the lattice parameters are a=8.223(1), c=5.109(1) Å. The Ti atoms were found to occupy octahedral (1a) and tetrahedral (3f) sites coordinated by six and four oxygen atoms, respectively.</abstract>
<note type="content">Fig. 1: Projections of the La3MGa5O14 structure along the [010] direction (a), and normal to the [001] direction (b).</note>
<note type="content">Fig. 2: (a) La3TiGa5O14, (b) La3ZrGa5O14 and (c) La3HfGa5O14 crystals grown by the μ-PD method.</note>
<note type="content">Fig. 3: La3TiGa5O14 crystal grown by Cz technique using the residual melt after the first growth.</note>
<note type="content">Fig. 4: An ORTEP [17] drawing of part of the La3TiGa5O14 structure. The thermal ellipsoids enclose an 80% probability distribution.</note>
<note type="content">Table 1: Crystal data and intensity collection for La3TiGa5O14</note>
<note type="content">Table 2: Positional and anisotropic thermal parameters for La3TiGa5O14</note>
<note type="content">Table 3: Selected interatomic distances (Å) for La3TiGa5O14</note>
<subject><genre>Keywords</genre>
<topic>Gallates</topic>
<topic>Crystal growth</topic>
<topic>Crystal structure</topic>
<topic>Single crystal</topic>
<topic>X-ray diffraction</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Journal of Alloys and Compounds</title>
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<titleInfo type="abbreviated"><title>JALCOM</title>
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<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">19990830</dateIssued>
</originInfo>
<identifier type="ISSN">0925-8388</identifier>
<identifier type="PII">S0925-8388(00)X0079-5</identifier>
<part><date>19990830</date>
<detail type="volume"><number>290</number>
<caption>vol.</caption>
</detail>
<detail type="issue"><number>1–2</number>
<caption>no.</caption>
</detail>
<extent unit="issue-pages"><start>L1</start>
<end>L10</end>
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<extent unit="issue-pages"><start>1</start>
<end>316</end>
</extent>
<extent unit="pages"><start>244</start>
<end>249</end>
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<identifier type="DOI">10.1016/S0925-8388(99)00194-2</identifier>
<identifier type="PII">S0925-8388(99)00194-2</identifier>
<accessCondition type="use and reproduction" contentType="copyright">©1999 Elsevier Science S.A.</accessCondition>
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