Chemical bonding in EuTGe (T = Ni, Pd, Pt) and physical properties of EuPdGe
EuPdGe was prepared from the elements by reaction in a sealed tantalum tube in a high-frequency furnace. Magnetic susceptibility measurements show Curie-Weiss behavior above 60 K with an experimental magnetic moment of 8.0(1)μB/Eu indicating divalent europium. At low external fields antiferromagneti...
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| Veröffentlicht in: | Journal of solid state chemistry 2007-02, Vol.180 (2), p.533-540 |
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| creator | ROCQUEFELTE, Xavier GAUTIER, Régis HALET, Jean-Francois MÜLLMANN, Ralf ROSENHAHN, Carsten MOSEL, Bernd D KOTZYBA, Gunter POTTGEN, Rainer |
| description | EuPdGe was prepared from the elements by reaction in a sealed tantalum tube in a high-frequency furnace. Magnetic susceptibility measurements show Curie-Weiss behavior above 60 K with an experimental magnetic moment of 8.0(1)μB/Eu indicating divalent europium. At low external fields antiferromagnetic ordering is observed at TN=8.5(5) K. Magnetization measurements indicate a metamagnetic transition at a critical field of 1.5(2) T and a saturation magnetization of 6.4(1)μB/Eu at 5 K and 5.5 T. EuPdGe is a metallic conductor with a room-temperature value of 5000±500 μΩ cm for the specific resistivity. 151Eu Mössbauer spectroscopic experiments show a single europium site with an isomer shift of δ=−9.7(1) mm/s at 78 K. At 4.2 K full magnetic hyperfine field splitting with a hyperfine field of B=20.7(5) T is observed. Density functional calculations show the similarity of the electronic structures of EuPdGe and EuPtGe. T-Ge interactions (T=Pd, Pt) exist in both compounds. An ionic formula splitting Eu2+T0Ge2− seems more appropriate than Eu2+T2+Ge4− accounting for the bonding in both compounds. Geometry optimizations of EuTGe (T=Ni, Pt, Pd) show weak energy differences between the two structural types. |
| doi_str_mv | 10.1016/j.jssc.2006.11.013 |
| format | Article |
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Magnetic susceptibility measurements show Curie-Weiss behavior above 60 K with an experimental magnetic moment of 8.0(1)μB/Eu indicating divalent europium. At low external fields antiferromagnetic ordering is observed at TN=8.5(5) K. Magnetization measurements indicate a metamagnetic transition at a critical field of 1.5(2) T and a saturation magnetization of 6.4(1)μB/Eu at 5 K and 5.5 T. EuPdGe is a metallic conductor with a room-temperature value of 5000±500 μΩ cm for the specific resistivity. 151Eu Mössbauer spectroscopic experiments show a single europium site with an isomer shift of δ=−9.7(1) mm/s at 78 K. At 4.2 K full magnetic hyperfine field splitting with a hyperfine field of B=20.7(5) T is observed. Density functional calculations show the similarity of the electronic structures of EuPdGe and EuPtGe. T-Ge interactions (T=Pd, Pt) exist in both compounds. An ionic formula splitting Eu2+T0Ge2− seems more appropriate than Eu2+T2+Ge4− accounting for the bonding in both compounds. Geometry optimizations of EuTGe (T=Ni, Pt, Pd) show weak energy differences between the two structural types.</description><identifier>ISSN: 0022-4596</identifier><identifier>EISSN: 1095-726X</identifier><identifier>DOI: 10.1016/j.jssc.2006.11.013</identifier><identifier>CODEN: JSSCBI</identifier><language>eng</language><publisher>San Diego, CA: Elsevier</publisher><subject>ACCOUNTING ; ANTIFERROMAGNETISM ; CHEMICAL BONDS ; Chemical Sciences ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; CRITICAL FIELD ; Cross-disciplinary physics: materials science; rheology ; DENSITY FUNCTIONAL METHOD ; Electron states ; ELECTRONIC STRUCTURE ; EUROPIUM ALLOYS ; EUROPIUM COMPOUNDS ; EUROPIUM IONS ; Exact sciences and technology ; GERMANIUM ALLOYS ; Inorganic chemistry ; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; INTERATOMIC DISTANCES ; INTERMETALLIC COMPOUNDS ; ISOMER SHIFT ; MAGNETIC MOMENTS ; Magnetic resonances and relaxations in condensed matter, mössbauer effect ; MAGNETIC SUSCEPTIBILITY ; MAGNETIZATION ; Materials science ; Materials synthesis; materials processing ; Methods of electronic structure calculations ; MOESSBAUER EFFECT ; Mössbauer effect; other γ-ray spectroscopy ; NICKEL ALLOYS ; or physical chemistry ; PALLADIUM ALLOYS ; Physics ; PLATINUM ALLOYS ; TEMPERATURE RANGE 0065-0273 K ; TEMPERATURE RANGE 0273-0400 K ; Theoretical and</subject><ispartof>Journal of solid state chemistry, 2007-02, Vol.180 (2), p.533-540</ispartof><rights>2007 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c339t-6ccf5b5c034a8c3ab6f87e82286ecd2f1d46f26a1588ef2bead908de7ec7aa733</citedby><cites>FETCH-LOGICAL-c339t-6ccf5b5c034a8c3ab6f87e82286ecd2f1d46f26a1588ef2bead908de7ec7aa733</cites><orcidid>0000-0002-2315-4200 ; 0000-0003-0191-2354</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18551202$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-00862568$$DView record in HAL$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/21015680$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>ROCQUEFELTE, Xavier</creatorcontrib><creatorcontrib>GAUTIER, Régis</creatorcontrib><creatorcontrib>HALET, Jean-Francois</creatorcontrib><creatorcontrib>MÜLLMANN, Ralf</creatorcontrib><creatorcontrib>ROSENHAHN, Carsten</creatorcontrib><creatorcontrib>MOSEL, Bernd D</creatorcontrib><creatorcontrib>KOTZYBA, Gunter</creatorcontrib><creatorcontrib>POTTGEN, Rainer</creatorcontrib><title>Chemical bonding in EuTGe (T = Ni, Pd, Pt) and physical properties of EuPdGe</title><title>Journal of solid state chemistry</title><description>EuPdGe was prepared from the elements by reaction in a sealed tantalum tube in a high-frequency furnace. Magnetic susceptibility measurements show Curie-Weiss behavior above 60 K with an experimental magnetic moment of 8.0(1)μB/Eu indicating divalent europium. At low external fields antiferromagnetic ordering is observed at TN=8.5(5) K. Magnetization measurements indicate a metamagnetic transition at a critical field of 1.5(2) T and a saturation magnetization of 6.4(1)μB/Eu at 5 K and 5.5 T. EuPdGe is a metallic conductor with a room-temperature value of 5000±500 μΩ cm for the specific resistivity. 151Eu Mössbauer spectroscopic experiments show a single europium site with an isomer shift of δ=−9.7(1) mm/s at 78 K. At 4.2 K full magnetic hyperfine field splitting with a hyperfine field of B=20.7(5) T is observed. Density functional calculations show the similarity of the electronic structures of EuPdGe and EuPtGe. T-Ge interactions (T=Pd, Pt) exist in both compounds. An ionic formula splitting Eu2+T0Ge2− seems more appropriate than Eu2+T2+Ge4− accounting for the bonding in both compounds. Geometry optimizations of EuTGe (T=Ni, Pt, Pd) show weak energy differences between the two structural types.</description><subject>ACCOUNTING</subject><subject>ANTIFERROMAGNETISM</subject><subject>CHEMICAL BONDS</subject><subject>Chemical Sciences</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>CRITICAL FIELD</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>DENSITY FUNCTIONAL METHOD</subject><subject>Electron states</subject><subject>ELECTRONIC STRUCTURE</subject><subject>EUROPIUM ALLOYS</subject><subject>EUROPIUM COMPOUNDS</subject><subject>EUROPIUM IONS</subject><subject>Exact sciences and technology</subject><subject>GERMANIUM ALLOYS</subject><subject>Inorganic chemistry</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>INTERATOMIC DISTANCES</subject><subject>INTERMETALLIC COMPOUNDS</subject><subject>ISOMER SHIFT</subject><subject>MAGNETIC MOMENTS</subject><subject>Magnetic resonances and relaxations in condensed matter, mössbauer effect</subject><subject>MAGNETIC SUSCEPTIBILITY</subject><subject>MAGNETIZATION</subject><subject>Materials science</subject><subject>Materials synthesis; materials processing</subject><subject>Methods of electronic structure calculations</subject><subject>MOESSBAUER EFFECT</subject><subject>Mössbauer effect; other γ-ray spectroscopy</subject><subject>NICKEL ALLOYS</subject><subject>or physical chemistry</subject><subject>PALLADIUM ALLOYS</subject><subject>Physics</subject><subject>PLATINUM ALLOYS</subject><subject>TEMPERATURE RANGE 0065-0273 K</subject><subject>TEMPERATURE RANGE 0273-0400 K</subject><subject>Theoretical and</subject><issn>0022-4596</issn><issn>1095-726X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNpFkEFLwzAUgIMoOKd_wFNABAe2vqRtmh08jDE3oegOE7yFNE1sytaWpgr796ZW9BAehO97PD6ErgmEBAh7qMLKORVSABYSEgKJTtCEwDwJUsreT9EEgNIgTubsHF04VwEQkvB4grJlqQ9WyT3Om7qw9Qe2NV597tYa3-3wI36x93hb-NfPsKwL3JZH94O3XdPqrrfa4cZ4Y1us9SU6M3Lv9NXvnKK3p9VuuQmy1_XzcpEFKormfcCUMkmeKIhiyVUkc2Z4qjmlnGlVUEOKmBnKpL-Qa0NzLYs58EKnWqVSplE0RTfj3sb1Vjhle61K1dS1Vr2gPkjCOHhqNlKl3Iu2swfZHUUjrdgsMjH8AXBGPfpFPEtHVnWNc502fwIBMRQWlRgKi6GwIET4wl66HaVWOp_EdLJW1v2bPEkIBRp9A6LeefI</recordid><startdate>20070201</startdate><enddate>20070201</enddate><creator>ROCQUEFELTE, Xavier</creator><creator>GAUTIER, Régis</creator><creator>HALET, Jean-Francois</creator><creator>MÜLLMANN, Ralf</creator><creator>ROSENHAHN, Carsten</creator><creator>MOSEL, Bernd D</creator><creator>KOTZYBA, Gunter</creator><creator>POTTGEN, Rainer</creator><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-2315-4200</orcidid><orcidid>https://orcid.org/0000-0003-0191-2354</orcidid></search><sort><creationdate>20070201</creationdate><title>Chemical bonding in EuTGe (T = Ni, Pd, Pt) and physical properties of EuPdGe</title><author>ROCQUEFELTE, Xavier ; GAUTIER, Régis ; HALET, Jean-Francois ; MÜLLMANN, Ralf ; ROSENHAHN, Carsten ; MOSEL, Bernd D ; KOTZYBA, Gunter ; POTTGEN, Rainer</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c339t-6ccf5b5c034a8c3ab6f87e82286ecd2f1d46f26a1588ef2bead908de7ec7aa733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>ACCOUNTING</topic><topic>ANTIFERROMAGNETISM</topic><topic>CHEMICAL BONDS</topic><topic>Chemical Sciences</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>CRITICAL FIELD</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>DENSITY FUNCTIONAL METHOD</topic><topic>Electron states</topic><topic>ELECTRONIC STRUCTURE</topic><topic>EUROPIUM ALLOYS</topic><topic>EUROPIUM COMPOUNDS</topic><topic>EUROPIUM IONS</topic><topic>Exact sciences and technology</topic><topic>GERMANIUM ALLOYS</topic><topic>Inorganic chemistry</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>INTERATOMIC DISTANCES</topic><topic>INTERMETALLIC COMPOUNDS</topic><topic>ISOMER SHIFT</topic><topic>MAGNETIC MOMENTS</topic><topic>Magnetic resonances and relaxations in condensed matter, mössbauer effect</topic><topic>MAGNETIC SUSCEPTIBILITY</topic><topic>MAGNETIZATION</topic><topic>Materials science</topic><topic>Materials synthesis; materials processing</topic><topic>Methods of electronic structure calculations</topic><topic>MOESSBAUER EFFECT</topic><topic>Mössbauer effect; other γ-ray spectroscopy</topic><topic>NICKEL ALLOYS</topic><topic>or physical chemistry</topic><topic>PALLADIUM ALLOYS</topic><topic>Physics</topic><topic>PLATINUM ALLOYS</topic><topic>TEMPERATURE RANGE 0065-0273 K</topic><topic>TEMPERATURE RANGE 0273-0400 K</topic><topic>Theoretical and</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>ROCQUEFELTE, Xavier</creatorcontrib><creatorcontrib>GAUTIER, Régis</creatorcontrib><creatorcontrib>HALET, Jean-Francois</creatorcontrib><creatorcontrib>MÜLLMANN, Ralf</creatorcontrib><creatorcontrib>ROSENHAHN, Carsten</creatorcontrib><creatorcontrib>MOSEL, Bernd D</creatorcontrib><creatorcontrib>KOTZYBA, Gunter</creatorcontrib><creatorcontrib>POTTGEN, Rainer</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV</collection><jtitle>Journal of solid state chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>ROCQUEFELTE, Xavier</au><au>GAUTIER, Régis</au><au>HALET, Jean-Francois</au><au>MÜLLMANN, Ralf</au><au>ROSENHAHN, Carsten</au><au>MOSEL, Bernd D</au><au>KOTZYBA, Gunter</au><au>POTTGEN, Rainer</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Chemical bonding in EuTGe (T = Ni, Pd, Pt) and physical properties of EuPdGe</atitle><jtitle>Journal of solid state chemistry</jtitle><date>2007-02-01</date><risdate>2007</risdate><volume>180</volume><issue>2</issue><spage>533</spage><epage>540</epage><pages>533-540</pages><issn>0022-4596</issn><eissn>1095-726X</eissn><coden>JSSCBI</coden><abstract>EuPdGe was prepared from the elements by reaction in a sealed tantalum tube in a high-frequency furnace. Magnetic susceptibility measurements show Curie-Weiss behavior above 60 K with an experimental magnetic moment of 8.0(1)μB/Eu indicating divalent europium. At low external fields antiferromagnetic ordering is observed at TN=8.5(5) K. Magnetization measurements indicate a metamagnetic transition at a critical field of 1.5(2) T and a saturation magnetization of 6.4(1)μB/Eu at 5 K and 5.5 T. EuPdGe is a metallic conductor with a room-temperature value of 5000±500 μΩ cm for the specific resistivity. 151Eu Mössbauer spectroscopic experiments show a single europium site with an isomer shift of δ=−9.7(1) mm/s at 78 K. At 4.2 K full magnetic hyperfine field splitting with a hyperfine field of B=20.7(5) T is observed. Density functional calculations show the similarity of the electronic structures of EuPdGe and EuPtGe. T-Ge interactions (T=Pd, Pt) exist in both compounds. An ionic formula splitting Eu2+T0Ge2− seems more appropriate than Eu2+T2+Ge4− accounting for the bonding in both compounds. Geometry optimizations of EuTGe (T=Ni, Pt, Pd) show weak energy differences between the two structural types.</abstract><cop>San Diego, CA</cop><pub>Elsevier</pub><doi>10.1016/j.jssc.2006.11.013</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-2315-4200</orcidid><orcidid>https://orcid.org/0000-0003-0191-2354</orcidid></addata></record> |
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| ispartof | Journal of solid state chemistry, 2007-02, Vol.180 (2), p.533-540 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | ACCOUNTING ANTIFERROMAGNETISM CHEMICAL BONDS Chemical Sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties CRITICAL FIELD Cross-disciplinary physics: materials science rheology DENSITY FUNCTIONAL METHOD Electron states ELECTRONIC STRUCTURE EUROPIUM ALLOYS EUROPIUM COMPOUNDS EUROPIUM IONS Exact sciences and technology GERMANIUM ALLOYS Inorganic chemistry INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY INTERATOMIC DISTANCES INTERMETALLIC COMPOUNDS ISOMER SHIFT MAGNETIC MOMENTS Magnetic resonances and relaxations in condensed matter, mössbauer effect MAGNETIC SUSCEPTIBILITY MAGNETIZATION Materials science Materials synthesis materials processing Methods of electronic structure calculations MOESSBAUER EFFECT Mössbauer effect other γ-ray spectroscopy NICKEL ALLOYS or physical chemistry PALLADIUM ALLOYS Physics PLATINUM ALLOYS TEMPERATURE RANGE 0065-0273 K TEMPERATURE RANGE 0273-0400 K Theoretical and |
| title | Chemical bonding in EuTGe (T = Ni, Pd, Pt) and physical properties of EuPdGe |
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