Thermal expansion of the magnetically ordering intermetallics RTMg (R = Eu, Gd and T = Ag, Au)
We report measurements of the thermal expansion for two Eu\(^{+2}\)- and two Gd\(^{+3}\)-based intermetallics which exhibit ferro- or antiferromagnetic phase transitions. These materials show sharp positive (EuAgMg and GdAuMg) and negative (EuAuMg and GdAgMg) peaks in the temperature dependence of t...
Gespeichert in:
| Veröffentlicht in: | arXiv.org 2007-08 |
|---|---|
| Hauptverfasser: | , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | arXiv.org |
| container_volume | |
| creator | Rohrkamp, J Heyer, O Fickenscher, T Poettgen, R Jodlauk, S Hartmann, H Lorenz, T Mydosh, J A |
| description | We report measurements of the thermal expansion for two Eu\(^{+2}\)- and two Gd\(^{+3}\)-based intermetallics which exhibit ferro- or antiferromagnetic phase transitions. These materials show sharp positive (EuAgMg and GdAuMg) and negative (EuAuMg and GdAgMg) peaks in the temperature dependence of the thermal expansion coefficient \(\alpha\) which become smeared and/or displaced in an external magnetic field. Together with specific heat data we determine the initial pressure dependences of the transition temperatures at ambient pressure using the Ehrenfest or Clausius-Clapeyron relation. We find large pressure dependences indicating strong spin-phonon coupling, in particular for GdAgMg and EuAuMg where a quantum phase transition might be reached at moderate pressures of a few GPa. |
| doi_str_mv | 10.48550/arxiv.0708.2817 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_arxiv</sourceid><recordid>TN_cdi_arxiv_primary_0708_2817</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2089932131</sourcerecordid><originalsourceid>FETCH-LOGICAL-a511-2ce4f745ee89e3eef11dc473d8e669a55bb9660dcbe755d80baade845cc848323</originalsourceid><addsrcrecordid>eNotkM1Lw0AUxBdBsNTePcmCF4Wm7meyOXgopVahIpScDZvdl3RLuqmbRNr_3tR6Gmb4Mbw3CN1RMhNKSvKsw9H9zEhC1IwpmlyhEeOcRkowdoMmbbsjhLA4YVLyEfrKthD2usZwPGjfusbjpsTdFvBeVx46Z3Rdn3ATLATnK-x8N_DQDakzLd5kHxV-3OAXvOyneGWx9hZng51XUzzvn27RdanrFib_OkbZ6zJbvEXrz9X7Yr6OtKQ0YgZEmQgJoFLgACWl1oiEWwVxnGopiyKNY2JNAYmUVpFCawtKSGOUUJzxMbq_1P79nh-C2-twys8b5OcNBuDhAhxC891D2-W7pg9-OClnRKUpZ5RT_gsQAF0_</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2089932131</pqid></control><display><type>article</type><title>Thermal expansion of the magnetically ordering intermetallics RTMg (R = Eu, Gd and T = Ag, Au)</title><source>arXiv.org</source><source>Free E- Journals</source><creator>Rohrkamp, J ; Heyer, O ; Fickenscher, T ; Poettgen, R ; Jodlauk, S ; Hartmann, H ; Lorenz, T ; Mydosh, J A</creator><creatorcontrib>Rohrkamp, J ; Heyer, O ; Fickenscher, T ; Poettgen, R ; Jodlauk, S ; Hartmann, H ; Lorenz, T ; Mydosh, J A</creatorcontrib><description>We report measurements of the thermal expansion for two Eu\(^{+2}\)- and two Gd\(^{+3}\)-based intermetallics which exhibit ferro- or antiferromagnetic phase transitions. These materials show sharp positive (EuAgMg and GdAuMg) and negative (EuAuMg and GdAgMg) peaks in the temperature dependence of the thermal expansion coefficient \(\alpha\) which become smeared and/or displaced in an external magnetic field. Together with specific heat data we determine the initial pressure dependences of the transition temperatures at ambient pressure using the Ehrenfest or Clausius-Clapeyron relation. We find large pressure dependences indicating strong spin-phonon coupling, in particular for GdAgMg and EuAuMg where a quantum phase transition might be reached at moderate pressures of a few GPa.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.0708.2817</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Antiferromagnetism ; Gadolinium ; Gold ; Initial pressure ; Intermetallic compounds ; Phase transitions ; Physics - Materials Science ; Physics - Other Condensed Matter ; Pressure ; Silver ; Temperature ; Temperature dependence ; Thermal expansion</subject><ispartof>arXiv.org, 2007-08</ispartof><rights>Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the associated terms available at http://arxiv.org/abs/0708.2817.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,784,885,27925</link.rule.ids><backlink>$$Uhttps://doi.org/10.48550/arXiv.0708.2817$$DView paper in arXiv$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.1088/0953-8984/19/48/486204$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink></links><search><creatorcontrib>Rohrkamp, J</creatorcontrib><creatorcontrib>Heyer, O</creatorcontrib><creatorcontrib>Fickenscher, T</creatorcontrib><creatorcontrib>Poettgen, R</creatorcontrib><creatorcontrib>Jodlauk, S</creatorcontrib><creatorcontrib>Hartmann, H</creatorcontrib><creatorcontrib>Lorenz, T</creatorcontrib><creatorcontrib>Mydosh, J A</creatorcontrib><title>Thermal expansion of the magnetically ordering intermetallics RTMg (R = Eu, Gd and T = Ag, Au)</title><title>arXiv.org</title><description>We report measurements of the thermal expansion for two Eu\(^{+2}\)- and two Gd\(^{+3}\)-based intermetallics which exhibit ferro- or antiferromagnetic phase transitions. These materials show sharp positive (EuAgMg and GdAuMg) and negative (EuAuMg and GdAgMg) peaks in the temperature dependence of the thermal expansion coefficient \(\alpha\) which become smeared and/or displaced in an external magnetic field. Together with specific heat data we determine the initial pressure dependences of the transition temperatures at ambient pressure using the Ehrenfest or Clausius-Clapeyron relation. We find large pressure dependences indicating strong spin-phonon coupling, in particular for GdAgMg and EuAuMg where a quantum phase transition might be reached at moderate pressures of a few GPa.</description><subject>Antiferromagnetism</subject><subject>Gadolinium</subject><subject>Gold</subject><subject>Initial pressure</subject><subject>Intermetallic compounds</subject><subject>Phase transitions</subject><subject>Physics - Materials Science</subject><subject>Physics - Other Condensed Matter</subject><subject>Pressure</subject><subject>Silver</subject><subject>Temperature</subject><subject>Temperature dependence</subject><subject>Thermal expansion</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotkM1Lw0AUxBdBsNTePcmCF4Wm7meyOXgopVahIpScDZvdl3RLuqmbRNr_3tR6Gmb4Mbw3CN1RMhNKSvKsw9H9zEhC1IwpmlyhEeOcRkowdoMmbbsjhLA4YVLyEfrKthD2usZwPGjfusbjpsTdFvBeVx46Z3Rdn3ATLATnK-x8N_DQDakzLd5kHxV-3OAXvOyneGWx9hZng51XUzzvn27RdanrFib_OkbZ6zJbvEXrz9X7Yr6OtKQ0YgZEmQgJoFLgACWl1oiEWwVxnGopiyKNY2JNAYmUVpFCawtKSGOUUJzxMbq_1P79nh-C2-twys8b5OcNBuDhAhxC891D2-W7pg9-OClnRKUpZ5RT_gsQAF0_</recordid><startdate>20070821</startdate><enddate>20070821</enddate><creator>Rohrkamp, J</creator><creator>Heyer, O</creator><creator>Fickenscher, T</creator><creator>Poettgen, R</creator><creator>Jodlauk, S</creator><creator>Hartmann, H</creator><creator>Lorenz, T</creator><creator>Mydosh, J A</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20070821</creationdate><title>Thermal expansion of the magnetically ordering intermetallics RTMg (R = Eu, Gd and T = Ag, Au)</title><author>Rohrkamp, J ; Heyer, O ; Fickenscher, T ; Poettgen, R ; Jodlauk, S ; Hartmann, H ; Lorenz, T ; Mydosh, J A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a511-2ce4f745ee89e3eef11dc473d8e669a55bb9660dcbe755d80baade845cc848323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Antiferromagnetism</topic><topic>Gadolinium</topic><topic>Gold</topic><topic>Initial pressure</topic><topic>Intermetallic compounds</topic><topic>Phase transitions</topic><topic>Physics - Materials Science</topic><topic>Physics - Other Condensed Matter</topic><topic>Pressure</topic><topic>Silver</topic><topic>Temperature</topic><topic>Temperature dependence</topic><topic>Thermal expansion</topic><toplevel>online_resources</toplevel><creatorcontrib>Rohrkamp, J</creatorcontrib><creatorcontrib>Heyer, O</creatorcontrib><creatorcontrib>Fickenscher, T</creatorcontrib><creatorcontrib>Poettgen, R</creatorcontrib><creatorcontrib>Jodlauk, S</creatorcontrib><creatorcontrib>Hartmann, H</creatorcontrib><creatorcontrib>Lorenz, T</creatorcontrib><creatorcontrib>Mydosh, J A</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rohrkamp, J</au><au>Heyer, O</au><au>Fickenscher, T</au><au>Poettgen, R</au><au>Jodlauk, S</au><au>Hartmann, H</au><au>Lorenz, T</au><au>Mydosh, J A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermal expansion of the magnetically ordering intermetallics RTMg (R = Eu, Gd and T = Ag, Au)</atitle><jtitle>arXiv.org</jtitle><date>2007-08-21</date><risdate>2007</risdate><eissn>2331-8422</eissn><abstract>We report measurements of the thermal expansion for two Eu\(^{+2}\)- and two Gd\(^{+3}\)-based intermetallics which exhibit ferro- or antiferromagnetic phase transitions. These materials show sharp positive (EuAgMg and GdAuMg) and negative (EuAuMg and GdAgMg) peaks in the temperature dependence of the thermal expansion coefficient \(\alpha\) which become smeared and/or displaced in an external magnetic field. Together with specific heat data we determine the initial pressure dependences of the transition temperatures at ambient pressure using the Ehrenfest or Clausius-Clapeyron relation. We find large pressure dependences indicating strong spin-phonon coupling, in particular for GdAgMg and EuAuMg where a quantum phase transition might be reached at moderate pressures of a few GPa.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.0708.2817</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | EISSN: 2331-8422 |
| ispartof | arXiv.org, 2007-08 |
| issn | 2331-8422 |
| language | eng |
| recordid | cdi_arxiv_primary_0708_2817 |
| source | arXiv.org; Free E- Journals |
| subjects | Antiferromagnetism Gadolinium Gold Initial pressure Intermetallic compounds Phase transitions Physics - Materials Science Physics - Other Condensed Matter Pressure Silver Temperature Temperature dependence Thermal expansion |
| title | Thermal expansion of the magnetically ordering intermetallics RTMg (R = Eu, Gd and T = Ag, Au) |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-03T07%3A52%3A42IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_arxiv&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Thermal%20expansion%20of%20the%20magnetically%20ordering%20intermetallics%20RTMg%20(R%20=%20Eu,%20Gd%20and%20T%20=%20Ag,%20Au)&rft.jtitle=arXiv.org&rft.au=Rohrkamp,%20J&rft.date=2007-08-21&rft.eissn=2331-8422&rft_id=info:doi/10.48550/arxiv.0708.2817&rft_dat=%3Cproquest_arxiv%3E2089932131%3C/proquest_arxiv%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2089932131&rft_id=info:pmid/&rfr_iscdi=true |