Magnetic Structures of GdCu1-xZnx System

Takei, Koji; Ishikawa, Yoshikazu; Watanabe, Noboru; Tajima, Kazuo

doi:10.1143/jpsj.47.88

Cited by 15 publications

(3 citation statements)

References 7 publications

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“…As occurs in many other RMM [25][26][27] systems, the introduction of Cu modifies the conduction electron concentration and gives rise to an enhancement of the negative magnetic interactions. The most remarkable feature of these Pt/Cu substitutions is that the evolution from ferromagnetism to antiferromagnetism takes place with negligible volume and atomic distance variations through the series.…”

Section: Discussionmentioning

confidence: 99%

Magnetic properties and thermal treatments in pseudobinary TbPt_1 xCu_xalloys

Señas¹,

Fernández²,

Sal³

et al. 2003

J. Phys.: Condens. Matter

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The structural and magnetic properties of the TbPt1−xCux orthorhombic compounds are studied in two series of samples: prepared ‘as quenched’ and after an annealing treatment. An extended analysis of the influence of the annealing in the microstructure of the samples was performed by x-ray, neutron diffraction and scanning electron microscopy. This analysis allows us to understand the modifications in the magnetic properties of both series, as a consequence of the sample homogenization process. Changes from ferromagnetism to antiferromagnetism with increasing Cu concentration are found in both series despite the ionic distance invariance. x = 0.3 is the composition limit between both behaviours. This study strongly supports the importance of the conduction band state rather than ionic distances in the magnetic behaviour of these rare earth–d compounds.

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Section: Discussionmentioning

confidence: 99%

Magnetic properties and thermal treatments in pseudobinary TbPt_1 xCu_xalloys

Señas¹,

Fernández²,

Sal³

et al. 2003

J. Phys.: Condens. Matter

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“…Regarding the magnetic ordering, many experiments looked into the importance of the number of conduction electrons and the site separations, as well as the concentration of different species in the rare-earth intermetallic alloys. Among the frequently studied intermetallic alloys are RZn x Cu 1−x , RIn x Ag 1−x , GdZn x Ag 1−x , and GdIn x Zn 1−x [4,5,7,[10][11][12][13]. It has been observed that the intermetallic compounds formed * leon.petit@stfc.ac.uk with the heavy lanthanide elements and the group IB elements, Cu, Ag, and Au, are usually antiferromagnetic [4], while those formed with the group IIB elements, Zn, Cd, and Hg, are ferromagnetic.…”

Section: Introductionmentioning

confidence: 99%

Magnetic structure of selected Gd intermetallic alloys from first principles

et al. 2020

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Using first-principles calculations, based on disordered local moment (DLM) theory combined with the self-interaction corrected local spin density approximation (SIC-LSDA), we study magnetic correlations in the paramagnetic state of GdX (X =Cu, Zn, Ga, Ag, Cd, In, Au, Hg, and Tl) intermetallics and their alloys. The predicted magnetic orders and ordering temperatures that these correlations lead to are in overall good agreement with available experiments. The interactions between the Gd f-electron local moments are mediated by the valence electrons of the intermetallics which comprise both Gd and X d bands as well as sp bands. There are RKKY-like features such as dependence on the number of sp-valence electrons but other variations manifest themselves in the phase diagrams as regions of incommensurate magnetic ordering, the origin and range of which are related to the binding energies of the alloying anion d states, and their propensity to hybridize with the Gd states at the Fermi level.

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“…The CsCl type intermetallic solid solution series GdAg,-,Zn, provides a magnetic random-bond system in which the Gd-moments occupy a complete, Simple cubic magnetic sublattice but interact by antiferromagnetic or ferromagnetic interactions, depending on whether the interaction is mediated primarily by A~' + or zn2+. The magnetic order of GdAg is antiferromagnetic (TN = 136 K, 8 = -106 K) [I, 21 whereas GdZn is a ferromagnet with T, = 269 K and B = 273 K [3,4].…”

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confidence: 99%