Anomalous thermal expansion of cobalt olivine, Co2SiO4, at low temperatures
The temperature variation of the Co2SiO4 structural parameters has been investigated by means of both neutron powder and single‐crystal diffraction. Measurements were performed in a broad temperature range from 5 to 500 K. There is clear evidence of an anomalous thermal expansion related to the magn...
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| Veröffentlicht in: | Journal of applied crystallography 2010-08, Vol.43 (4), p.720-728 |
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| container_title | Journal of applied crystallography |
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| creator | Sazonov, Andrew Hutanu, Vladimir Meven, Martin Heger, Gernot Hansen, Thomas Senyshyn, Anatoliy |
| description | The temperature variation of the Co2SiO4 structural parameters has been investigated by means of both neutron powder and single‐crystal diffraction. Measurements were performed in a broad temperature range from 5 to 500 K. There is clear evidence of an anomalous thermal expansion related to the magnetic phase transition at 50 K. Below this temperature an abrupt elongation and contraction were observed along the c and b axes (space group Pnma), respectively, whereas the lattice parameter a remains constant in the range between 5 and 50 K. The resulting volume of the unit cell is contracted below 50 K. This phenomenon is attributed to magnetostriction effects. A model based on the specific heat capacity data was applied for the quantitative description of the anomalous thermal expansion behaviour. On the other hand, no anomalies can be observed in the temperature dependency of the interatomic distances and angles. |
| doi_str_mv | 10.1107/S002188981001455X |
| format | Article |
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Measurements were performed in a broad temperature range from 5 to 500 K. There is clear evidence of an anomalous thermal expansion related to the magnetic phase transition at 50 K. Below this temperature an abrupt elongation and contraction were observed along the c and b axes (space group Pnma), respectively, whereas the lattice parameter a remains constant in the range between 5 and 50 K. The resulting volume of the unit cell is contracted below 50 K. This phenomenon is attributed to magnetostriction effects. A model based on the specific heat capacity data was applied for the quantitative description of the anomalous thermal expansion behaviour. On the other hand, no anomalies can be observed in the temperature dependency of the interatomic distances and angles.</description><identifier>ISSN: 1600-5767</identifier><identifier>ISSN: 0021-8898</identifier><identifier>EISSN: 1600-5767</identifier><identifier>DOI: 10.1107/S002188981001455X</identifier><language>eng</language><publisher>5 Abbey Square, Chester, Cheshire CH1 2HU, England: International Union of Crystallography</publisher><subject>anomalous thermal expansion ; cobalt olivine ; Diffraction ; Elongation ; Interatomic distance ; Lattice parameters ; Magnetostriction ; Mathematical models ; Olivine ; Single crystals ; Temperature effects ; Thermal energy ; Thermal expansion</subject><ispartof>Journal of applied crystallography, 2010-08, Vol.43 (4), p.720-728</ispartof><rights>International Union of Crystallography, 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1107%2FS002188981001455X$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1107%2FS002188981001455X$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids></links><search><creatorcontrib>Sazonov, Andrew</creatorcontrib><creatorcontrib>Hutanu, Vladimir</creatorcontrib><creatorcontrib>Meven, Martin</creatorcontrib><creatorcontrib>Heger, Gernot</creatorcontrib><creatorcontrib>Hansen, Thomas</creatorcontrib><creatorcontrib>Senyshyn, Anatoliy</creatorcontrib><title>Anomalous thermal expansion of cobalt olivine, Co2SiO4, at low temperatures</title><title>Journal of applied crystallography</title><addtitle>J. Appl. Cryst</addtitle><description>The temperature variation of the Co2SiO4 structural parameters has been investigated by means of both neutron powder and single‐crystal diffraction. Measurements were performed in a broad temperature range from 5 to 500 K. There is clear evidence of an anomalous thermal expansion related to the magnetic phase transition at 50 K. Below this temperature an abrupt elongation and contraction were observed along the c and b axes (space group Pnma), respectively, whereas the lattice parameter a remains constant in the range between 5 and 50 K. The resulting volume of the unit cell is contracted below 50 K. This phenomenon is attributed to magnetostriction effects. A model based on the specific heat capacity data was applied for the quantitative description of the anomalous thermal expansion behaviour. On the other hand, no anomalies can be observed in the temperature dependency of the interatomic distances and angles.</description><subject>anomalous thermal expansion</subject><subject>cobalt olivine</subject><subject>Diffraction</subject><subject>Elongation</subject><subject>Interatomic distance</subject><subject>Lattice parameters</subject><subject>Magnetostriction</subject><subject>Mathematical models</subject><subject>Olivine</subject><subject>Single crystals</subject><subject>Temperature effects</subject><subject>Thermal energy</subject><subject>Thermal expansion</subject><issn>1600-5767</issn><issn>0021-8898</issn><issn>1600-5767</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNplkM1OwzAQhCMEEqXwANwsLlwI-CeO3WOJIAUqKiiovVlO6ggXJw5xQtu3x1URQnDZncM3q9kJglMELxGC7GoKIUacDziCEEWUzveCHoohDCmL2f4vfRgcObf0UMww7gUPw8qW0tjOgfZNNV4Cta5l5bStgC1AbjNpWmCN_tSVugCJxVM9iS6AbIGxK9CqslaNbLtGuePgoJDGqZPv3Q9eb29eklE4nqR3yXAcakwQChFnPFO4UH5EEeYRl4XELINZ5jMRpBZYLeJY5lm2IDInFMEcYkphXiCY8QHpB-e7u3VjPzrlWlFqlytjZKX8I4JREtMBZ8yTZ3_Ipe2ayocTlEOEOaTIQ3wHrbRRG1E3upTNRiAots2Kf82K--R5NPepttZwZ9WuVesfq2zeRcwIo2L2mAqekpTQp5m4Jl_9UHu8</recordid><startdate>20100801</startdate><enddate>20100801</enddate><creator>Sazonov, Andrew</creator><creator>Hutanu, Vladimir</creator><creator>Meven, Martin</creator><creator>Heger, Gernot</creator><creator>Hansen, Thomas</creator><creator>Senyshyn, Anatoliy</creator><general>International Union of Crystallography</general><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20100801</creationdate><title>Anomalous thermal expansion of cobalt olivine, Co2SiO4, at low temperatures</title><author>Sazonov, Andrew ; Hutanu, Vladimir ; Meven, Martin ; Heger, Gernot ; Hansen, Thomas ; Senyshyn, Anatoliy</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i2311-1878be2febe2442848afa27b0bb67231ed2ed66acbbd3ac3510c02550cf10b893</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>anomalous thermal expansion</topic><topic>cobalt olivine</topic><topic>Diffraction</topic><topic>Elongation</topic><topic>Interatomic distance</topic><topic>Lattice parameters</topic><topic>Magnetostriction</topic><topic>Mathematical models</topic><topic>Olivine</topic><topic>Single crystals</topic><topic>Temperature effects</topic><topic>Thermal energy</topic><topic>Thermal expansion</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sazonov, Andrew</creatorcontrib><creatorcontrib>Hutanu, Vladimir</creatorcontrib><creatorcontrib>Meven, Martin</creatorcontrib><creatorcontrib>Heger, Gernot</creatorcontrib><creatorcontrib>Hansen, Thomas</creatorcontrib><creatorcontrib>Senyshyn, Anatoliy</creatorcontrib><collection>Istex</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied crystallography</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sazonov, Andrew</au><au>Hutanu, Vladimir</au><au>Meven, Martin</au><au>Heger, Gernot</au><au>Hansen, Thomas</au><au>Senyshyn, Anatoliy</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Anomalous thermal expansion of cobalt olivine, Co2SiO4, at low temperatures</atitle><jtitle>Journal of applied crystallography</jtitle><addtitle>J. Appl. Cryst</addtitle><date>2010-08-01</date><risdate>2010</risdate><volume>43</volume><issue>4</issue><spage>720</spage><epage>728</epage><pages>720-728</pages><issn>1600-5767</issn><issn>0021-8898</issn><eissn>1600-5767</eissn><abstract>The temperature variation of the Co2SiO4 structural parameters has been investigated by means of both neutron powder and single‐crystal diffraction. Measurements were performed in a broad temperature range from 5 to 500 K. There is clear evidence of an anomalous thermal expansion related to the magnetic phase transition at 50 K. Below this temperature an abrupt elongation and contraction were observed along the c and b axes (space group Pnma), respectively, whereas the lattice parameter a remains constant in the range between 5 and 50 K. The resulting volume of the unit cell is contracted below 50 K. This phenomenon is attributed to magnetostriction effects. A model based on the specific heat capacity data was applied for the quantitative description of the anomalous thermal expansion behaviour. On the other hand, no anomalies can be observed in the temperature dependency of the interatomic distances and angles.</abstract><cop>5 Abbey Square, Chester, Cheshire CH1 2HU, England</cop><pub>International Union of Crystallography</pub><doi>10.1107/S002188981001455X</doi><tpages>9</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete; Alma/SFX Local Collection |
| subjects | anomalous thermal expansion cobalt olivine Diffraction Elongation Interatomic distance Lattice parameters Magnetostriction Mathematical models Olivine Single crystals Temperature effects Thermal energy Thermal expansion |
| title | Anomalous thermal expansion of cobalt olivine, Co2SiO4, at low temperatures |
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