The magnetic Compton scattering for the strongly correlated electron system of orthorhombic perovskite ruthenates CaRu1T O3 (T=Ti, Mn, Fe, Ni)

Mizusaki, S.; Okada, Noriko; Taniguchi, Takashi; Nagata, Y.; Hiraoka, Nozomu; Noro, Y.; Itou, M.; Sakurai, Y.

doi:10.1016/j.jmmm.2006.10.284

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…Since a Ti 3+ ion introduces 6 magnetic Ru ions, n B must be largest at a relatively small substitution level. This is consistent with the result of placeplaceCompton scattering experiment for CaRu 0.75 Ti 0.25 O 3 [12], where antiferromagnetic coupling between Ru and Ti has been revealed. On the other hand, n B has a maximum at relatively higher Mn substitution level (x$0.7) in the CRMO system.…”

Section: Resultssupporting

confidence: 92%

“…When Ti is substituted for Ru as non-magnetic Ti 4+ (3d 0 ) ion, it makes no magnetic contribution. In the magnetic placeplaceCompton scattering experiment for polycrystalline sample of CaRu 0.75 Ti 0.25 O 3 , it has been revealed that Ru and Ti have spin moments which couple antiferromagnetically [12]. Therefore, it is natural to consider that a portion of Ru and Ti ions exist as magnetic ions.…”

Section: Resultsmentioning

confidence: 99%

“…CaRuO 3 is known to be an itinerant paramagnet that is on the verge of magnetic ordering [5]. Therefore, CaRuO 3 readily forms magnetic order when other metal ions are doped into Ru site [6][7][8][9][10][11][12][13][14][15][16]. However, the mechanism of the occurrence of ferromagnetism has not been understood well.…”

Section: Introductionmentioning

confidence: 99%

“…However, the mechanism of the occurrence of ferromagnetism has not been understood well. In the studies for bulk polycrystalline samples of CaRu 1Àx Ti x O 3 , it was reported briefly that ferromagnetic behavior appears in the paramagnetic CaRuO 3 for very small Ti substitution (xZ0.05) [11,12] and, furthermore, magnetic moment is induced on Ru by Ti doping [12]. To deepen our understanding of the occurrence of ferromagnetism in CaRu 1Àx M x O 3 (M ¼ transition metal ions) system, systematic study on samples with a variety of composition and single-crystalline samples seems necessary.…”

Section: Introductionmentioning

confidence: 99%

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Ferromagnetism of epitaxially grown CaRu1−xMxO3 (M=Ti, Mn) films

Taniguchi

Ogawara

Fukuoka

et al. 2009

Journal of Magnetism and Magnetic Materials

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ferromagnetism of epitaxially grown CaRu1−xMxO3 (M=Ti, Mn) films

Taniguchi

Ogawara

Fukuoka

et al. 2009

Journal of Magnetism and Magnetic Materials

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“…Lattice parameters are given only for some selected compositions of solid solution. Some of these recent publications indicate that the magnetic behaviour of the CaRu 1−x Ti x O 3 [11][12][13] system is not completely clarified till now.…”

Section: Introductionmentioning

confidence: 99%

Solid state synthesis, structure and transport properties of compositions in the CaRu1−xTixO3−δ system

Vashook

Nitsche

Vasylechko

et al. 2009

Journal of Alloys and Compounds

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Crystallographic and magnetic properties of the mixed-valence oxidesCaRu1−xMnxO3

et al. 2008

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The crystallographic and magnetic properties of CaRu 1−x Mn x O 3 ͑0 Յ x Յ 1.0͒ were investigated in detail by x-ray powder diffraction, magnetization, and magnetic Compton scattering measurements. The lattice parameters show considerable deviation from Vegard's law. Ferromagnetism appears at a relatively large Mn concentration ͑x Ն 0.2͒, and the magnetization and the Curie temperature have a maximum at a Mn content near x = 0.7. The magnetic Compton scattering measurement revealed that Mn makes a dominant contribution to the magnetization and the Mn moment is antiparallel to the Ru moment, which is induced by Mn doping. The anomalous change in the unit cell volume and the occurrence of ferromagnetism were discussed on the basis of the mixed-valence model of Mn 3+ , Mn 4+ , Ru 4+ , and Ru 5+ ions. The Mn-composition dependence of the spontaneous magnetization was explained semiquantitatively assuming ͑1͒ ferromagnetic coupling between Mn 3+ and Mn 4+ ions, ͑2͒ antiferromagnetic coupling between Ru 5+ and Mn ions, and ͑3͒ the theoretical spin moments of Mn 3+ , Mn 4+ , and Ru 5+ . The ferromagnetic interaction between Mn 3+ and Mn 4+ ions seems to make a dominant contribution to the Curie temperature. The CaRu 1−x Mn x O 3 system is considered to be a ferrimagnet induced through competition between the ferromagnetic interaction between Mn ions and the antiferromagnetic interaction between Ru 5+ and Mn ions.

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The magnetic Compton scattering for the strongly correlated electron system of orthorhombic perovskite ruthenates CaRu1T O3 (T=Ti, Mn, Fe, Ni)

Cited by 3 publications

References 4 publications

Ferromagnetism of epitaxially grown CaRu1−xMxO3 (M=Ti, Mn) films

Ferromagnetism of epitaxially grown CaRu1−xMxO3 (M=Ti, Mn) films

Solid state synthesis, structure and transport properties of compositions in the CaRu1−xTixO3−δ system

Crystallographic and magnetic properties of the mixed-valence oxidesCaRu1−xMnxO3

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