Synthesis, crystal structures, and magnetic properties of double perovskites SrLaNiOsO6 and BaLaNiOsO6

Feng, Hai L.; Schnelle, Walter; Tjeng, L. H.; Jansen, Martin

doi:10.1016/j.ssc.2016.06.008

Cited by 16 publications

(13 citation statements)

References 34 publications

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“…The Weiss constant becomes significantly less negative when Ca 2+ is replaced by Sr 2+ , signaling either a reduction in AFM coupling or an increase in FM coupling in response to increasing the tolerance factor. The temperature dependence of the magnetization of LaSrNiOsO 6 and resulting Curie–Weiss parameters are quite similar to the recent report of this compound, including the high-temperature divergence …”

Section: Resultssupporting

confidence: 88%

“…The temperature dependence of the magnetization of LaSrNiOsO 6 and resulting Curie−Weiss parameters are quite similar to the recent report of this compound, including the high-temperature divergence. 45 The higher d-spacing NPD frames were examined for the presence of magnetic scattering at low temperatures. A set of Bragg reflections not present at room temperature was observed in three of the six compoundsLaSrNiOsO 6 , LaSrNiRuO 6 , and LaCaNiRuO 6 while no observable magnetic scattering intensity was found in the remaining three compounds.…”

Section: ■ Resultsmentioning

confidence: 99%

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The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O₆ (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

et al. 2018

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Six La ABB'O ( A = Ca, Sr; B = Co, Ni; B' = Ru, Os) double perovskites were synthesized, several for the first time, and their crystal structures and magnetic behavior were characterized with neutron powder diffraction and direct-current and alternating-current magnetometry. All six compounds crystallize with P2 /n space group symmetry, resulting from a a c octahedral tilting and complete rock salt ordering of transition-metal ions. Despite the electronic configurations of the transition-metal ions, either d-d or d-d, not one of the six compounds shows ferromagnetism as predicted by the Goodenough-Kanamori rules. LaSrNiOsO, LaSrNiRuO, and LaCaNiRuO display long-range antiferromagnetic order, while LaCaNiOsO, LaCaCoOsO, and LaSrCoOsO exhibit spin-glass behavior. These compounds are compared to the previously studied LaCaCoRuO and LaSrCoRuO, both of which order antiferromagnetically. The observed variations in magnetic properties can be attributed largely to the response of competing superexchange pathways due to changes in B-O- B' bond angles, differences in the radial extent of the 4d ( B' = Ru) and 5d ( B' = Os) orbitals, and filling of the t orbitals of the 3d ion.

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Section: Resultssupporting

confidence: 88%

Section: ■ Resultsmentioning

confidence: 99%

The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O₆ (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

et al. 2018

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“…The Os−O bond distances lie in the range of 1.8−2.1 Å, which is commonly observed for Os(V) oxides. [27][28][29][30] The crystal data, final refined parameters obtained from single crystal data and important bond lengths are listed in table 1, 2 and 3 respectively. The anisotropic displacement parameters are listed in supplementary information (Table S2).…”

Section: Resultsmentioning

confidence: 99%

Crystal Growth of a New 8H Perovskite Sr₈Os_6.3O₂₄ Exhibiting High T_C Ferromagnetism

Thakur

Doert

Mohitkar

et al. 2021

Crystal Growth & Design

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Single crystals of a new twinned hexagonal perovskite compound Sr8Os6.3O24 have been synthesized, and structural and magnetic properties have been determined. The compound crystallizes in a hexagonal cell with lattice parameters a = 9.6988(3) Å and c = 18.1657(5) Å. The structure is an eight-layered hexagonal B-site deficient perovskite with the layer sequence (ccch)2 and represents the first example of a hexagonal structure among 5d oxides adopting a twin option.The sample shows spontaneous ferromagnetic magnetization below 430 K with a small saturation moment of 0.11 μB/Os ion. This is the highest Curie temperature (TC) reported for any bulk perovskite containing only 5d ions at the B site.

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“…12,13 As a characteristic structural feature of double-perovskites, there are interpenetrating B and B′ face-centered cubic (fcc) sublattices, and their complex magnetic properties are mainly determined by the interplay between the intra-sublattice and inter-sublattices superexchange interactions. [19][20][21][22] The exchange interactions are determined by the orbital interactions involving the Fe 3+ (t2g 3 eg 2 ) and Os 5+ (t2g 3 ) ions which can be sensitively modified by cationic substitution [20][21][22] as well as by high pressure. 23 In addition, the role of spin-orbit coupling for the magnetic properties of Os 5+ double-perovskites is a matter of discussion.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Ferrimagnetism with Large Coercivity and Exchange Bias in the Partially Ordered 3d/5d Hexagonal Perovskite Ba₂Fe_1.12Os_0.88O₆

et al. 2017

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Double perovskite oxides A2BB'O6 combining 3d and 4d or 5d transition metal ions at the B and B' sites feature a variety of magnetic and magneto-electric properties. Targeting Ba2FeOsO6 we synthesized powder samples of non-stoichiometric Ba2Fe1.12Os0.88O6 by solidstate reaction from the oxides. The crystal structure was investigated by using synchrotron powder x-ray and powder neutron diffraction. In contrast to Ca2FeOsO6 and Sr2FeOsO6, the compound adopts the hexagonal 6L perovskite structure (space group 1 3m P) with partial Fe-Os order at both the edge-sharing B2O9 dimer and the corner sharing BO6 transition metal sites.Magnetization, neutron diffraction, and 57 Fe Mössbauer spectroscopy results show that Ba2Fe1.12Os0.88O6 develops ferrimagnetic order well above room temperature at TC ~ 370 K.The non-saturated magnetization curve at 2 K features a magnetic moment of 0.4 µB per formula unit at 7 T and a pronounced hysteresis with a coercive field of about 2 T. Large exchange bias effects are observed when the magnetization curves are measured after field cooling. The peculiar magnetic properties of Ba2Fe1.12Os0.88O6 are attributed to an inhomogeneous magnetic state formed as a consequence of the atomic disorder. Our results indicate that hexagonal double-perovskite-related oxides are a promising class of compounds for finding new materials with potential applications as hard magnets or in the area of spintronics.

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Synthesis, crystal structures, and magnetic properties of double perovskites SrLaNiOsO6 and BaLaNiOsO6

Cited by 16 publications

References 34 publications

The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O₆ (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O₆ (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

Crystal Growth of a New 8H Perovskite Sr₈Os_6.3O₂₄ Exhibiting High T_C Ferromagnetism

High-Temperature Ferrimagnetism with Large Coercivity and Exchange Bias in the Partially Ordered 3d/5d Hexagonal Perovskite Ba₂Fe_1.12Os_0.88O₆

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Synthesis, crystal structures, and magnetic properties of double perovskites SrLaNiOsO6 and BaLaNiOsO6

Cited by 16 publications

References 34 publications

The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O6 (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O6 (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

Crystal Growth of a New 8H Perovskite Sr8Os6.3O24 Exhibiting High TC Ferromagnetism

High-Temperature Ferrimagnetism with Large Coercivity and Exchange Bias in the Partially Ordered 3d/5d Hexagonal Perovskite Ba2Fe1.12Os0.88O6

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The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O₆ (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

The Crystal Structure and Magnetic Behavior of Quinary Osmate and Ruthenate Double Perovskites LaABB′O₆ (A = Ca, Sr; B = Co, Ni; B′ = Ru, Os)

Crystal Growth of a New 8H Perovskite Sr₈Os_6.3O₂₄ Exhibiting High T_C Ferromagnetism

High-Temperature Ferrimagnetism with Large Coercivity and Exchange Bias in the Partially Ordered 3d/5d Hexagonal Perovskite Ba₂Fe_1.12Os_0.88O₆