Modulated magnetic structures of the antiferromagnetic hydride CeRuSiH
| hal.structure.identifier | Laboratoire Léon Brillouin [LLB - UMR 12] | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TENCÉ, Sophie | |
| hal.structure.identifier | Laboratoire Léon Brillouin [LLB - UMR 12] | |
| dc.contributor.author | ANDRÉ, Gilles | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GAUDIN, Etienne | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHEVALIER, Bernard | |
| dc.date.issued | 2008 | |
| dc.identifier.issn | 0953-8984 | |
| dc.description.abstractEn | The hydride CeRuSiH is derived from the non-magnetic heavy-fermion ternary silicide CeRuSi that crystallizes in the tetragonal CeFeSi-type structure (P4/nmm space group). This hydride exhibits two antiferromagnetic transitions at TN1 = 7.5(2) K and TN2 = 3.1(2) K, evidenced by magnetization and specific heat measurements. Crystal and magnetic structures of CeRuSiH have thus been investigated by means of neutron powder diffraction, which has shown firstly that H-atoms are fully inserted in the [Ce4]-tetrahedra. Moreover, between TN1 and TN2, the Ce magnetic moments are ordered in a collinear antiferromagnetic sinusoidal structure associated with the propagation vector k = (kx, kx,1/2) (kx<1/3 and tends to 1/3 with decreasing temperature). At TN2, the magnetic structure becomes square wave modulated and commensurate with k = (1/3,1/3,1/2) as propagation vector. At 1.5 K, the structure is antiphase with a Ce magnetic moment of 1.68(2) µB. These magnetic structures are compared with those previously reported on the substituted ternary silicides (Ce1-xLax)Ru2Si2 and CeRu2(Si1-xGex)2, which also present an antiferromagnetic behaviour. | |
| dc.language.iso | en | |
| dc.publisher | IOP Publishing | |
| dc.subject.en | Magnetisms | |
| dc.subject.en | Hydrides | |
| dc.subject.en | Antiferromagnetisms | |
| dc.subject.en | Crystal structure | |
| dc.subject.en | Inorganic compounds | |
| dc.title.en | Modulated magnetic structures of the antiferromagnetic hydride CeRuSiH | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/0953-8984/20/25/255239 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Physics: Condensed Matter | |
| bordeaux.page | 255239 (6 p.) | |
| bordeaux.volume | 20 | |
| bordeaux.issue | 25 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | cea-00285472 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//cea-00285472v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Physics:%20Condensed%20Matter&rft.date=2008&rft.volume=20&rft.issue=25&rft.spage=255239%20(6%20p.)&rft.epage=255239%20(6%20p.)&rft.eissn=0953-8984&rft.issn=0953-8984&rft.au=TENC%C3%89,%20Sophie&ANDR%C3%89,%20Gilles&GAUDIN,%20Etienne&CHEVALIER,%20Bernard&rft.genre=article |
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