Metamagnetic transition in the 75 K antiferromagnet Gd<sub>4</sub>Co<sub>2</sub>Mg<sub>3</sub>
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GORSSE, Stéphane | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHEVALIER, Bernard | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | TUNCEL, Selcan | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | PÖTTGEN, Rainer | |
| dc.date.issued | 2009 | |
| dc.identifier.issn | 0022-4596 | |
| dc.description.abstractEn | Gd<sub>4</sub>Co<sub>2</sub>Mg<sub>3</sub> (Nd<sub>4</sub>Co<sub>2</sub>Mg<sub>3</sub> type; space group <i>P</i>2/<i>m</i>; <i>a</i>=754.0(4), <i>b</i>=374.1(1), <i>c</i>=822.5(3) pm and <i>β</i>=109.65(4)° as unit cell parameters) was synthesized from the elements by induction melting in a sealed tantalum tube. Its investigation by electrical resistivity, magnetization and specific heat measurements reveals an antiferromagnetic ordering at <i>T</i><sub>N</sub>=75(1) K. Moreover, this ternary compound presents a metamagnetic transition at low critical magnetic field (<i>H</i><sub>cr</sub>=0.93(2) T at 6 K) and exhibits a magnetic moment of 6.3(1) μ<sub>B</sub> per Gd-atom at 6 K and <i>H</i>=4.6 T. Due to this transition the compound shows a moderate magnetocaloric effect; at 77 K the maximum of the magnetic entropy change is Δ<i>S</i><sub>M</sub>=−10.3(2) J/kg K for a field change of 0-4.6 T. This effect is compared to that reported previously for compounds exhibiting a magnetic transition in the same temperature range. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Gadolinium based compound | |
| dc.subject.en | Magnetically ordered material | |
| dc.subject.en | Metamagnet | |
| dc.subject.en | Magnetocaloric effect | |
| dc.title.en | Metamagnetic transition in the 75 K antiferromagnet Gd<sub>4</sub>Co<sub>2</sub>Mg<sub>3</sub> | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jssc.2009.01.027 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Solid State Chemistry | |
| bordeaux.page | 948-953 | |
| bordeaux.volume | 182 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00372463 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00372463v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Solid%20State%20Chemistry&rft.date=2009&rft.volume=182&rft.issue=4&rft.spage=948-953&rft.epage=948-953&rft.eissn=0022-4596&rft.issn=0022-4596&rft.au=GORSSE,%20St%C3%A9phane&CHEVALIER,%20Bernard&TUNCEL,%20Selcan&P%C3%96TTGEN,%20Rainer&rft.genre=article |
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