Structure and magnetic properties of double perovskites SrCaLnRuO6 (Ln=La, Pr, Nd)

Sasaki, Akira; Doi, Yoshihiro; Hinatsu, Yukio

doi:10.1016/j.jallcom.2008.11.041

Cited by 6 publications

(2 citation statements)

References 19 publications

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“…Given the negligible difference in the X-ray scattering factors of Y 3+ and Ru 5+ it is not possible to detect such disorder using single wavelength XRD data, although disorder has been observed in the related Ca 2 LnRuO 6 series. 41,42 The Weiss constants are strongly dependent on the composition ranging from −540 K at x = 0.0 to −274 K at x = 2.0.…”

Section: Discussionmentioning

confidence: 99%

Structural and magnetic properties of the ruthenium double perovskites Ba_2−xSr_xYRuO₆

et al. 2015

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The crystal structures of the series of ordered double perovskites Ba(2-x)SrxYRuO(6) (0 ≤x≤ 2) were studied by high resolution synchrotron X-ray diffraction. The materials displayed a sequence of structures associated with increasing tilting of the corner sharing octahedra. The same sequence of structures can be induced by varying the temperature of appropriate members of the series. Magnetic susceptibility measurements demonstrate the oxides to be antiferromagnets with a Neel temperature of ∼30 K. There is a simple correlation between the Weiss constant θ and the Ru-O-Y bond angle. The two Sr rich oxides (x = 1.8 and 2.0) display an, unusual, sharp minimum in susceptibility at low temperatures that is associated with the reorientation of the spins.

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Section: Discussionmentioning

confidence: 99%

Structural and magnetic properties of the ruthenium double perovskites Ba_2−xSr_xYRuO₆

et al. 2015

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“…Instead a plethora of distorted variants have been reported . The stoichiometric changes can produce double perovskites with the general formula A 2 B I B II O 6 , in which the 6-coordinate sites are occupied by B I and B II cations, while 12-coordinate sites are solely occupied by an A cation. − …”

Section: Introductionmentioning

confidence: 99%

Aqueous Sol–Gel Route toward Selected Quaternary Metal Oxides with Single and Double Perovskite-Type Structure Containing Tellurium

Djerdj

Popović

Mal

et al. 2016

Crystal Growth & Design

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Highly crystalline SrFe 2/3 Te 1/3 O 3 , Ba 3 Fe 2 TeO 9 , and Ba 2 NiTeO 6 have been synthesized by using a specially developed sol−gel route methodology, reducing the time needed employing solid-state routes and resulting in high reaction yield up to 75%. These materials have been studied by X-ray powder diffraction (XRPD), scanning and transmission electron microscopy, Raman spectroscopy, and dielectric and magnetic measurements. At room temperature, the crystal structure of SrFe 2/3 Te 1/3 O 3 is cubic, space group Pm3̅ m, with a = 3.9373(2) Å, whereas Ba 3 Fe 2 TeO 9 crystallizes in the hexagonal crystal system, space group P6 3 /mmc, a = 5.7691(4) Å, and c = 14.208(1) Å. The third studied perovskite Ba 2 NiTeO 6 crystallizes in the trigonal R3̅ m space group with a = 5.7974(4) Å and c = 28.599(2) Å. Based on structural characterization results, the obtained single and double perovskite crystallites are nearly in nanometer regime, ranging from 45 to 164 nm, building micrometer-sized particles with visible well-faceted hexagonal morphology. Magnetic measurements show the onset of ferrimagnetic ordering at relatively high temperature of 667 K for the SrFe 2/3 Te 1/3 O 3 , whereas Ba 3 Fe 2 TeO 9 and Ba 2 NiTeO 6 show antiferromagnetic ordering below 80 and 8.6 K, respectively. The measured room temperature dielectric constants are in the range between 15 and 77.

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ChemInform Abstract: Structure and Magnetic Properties of Double Perovskites SrCaLnRuO₆ (Ln: La, Pr, Nd).

2009

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Ruthenium I 7800 Structure and Magnetic Properties of Double Perovskites SrCaLnRuO6 (Ln: La, Pr, Nd). -The title compounds are prepared by solid state reaction of CaCO 3 , SrCO 3 , Ln2O3 (Ln: La, Nd) or Pr6O11, and RuO2 at 1373-1473 K (24 h) and characterized by powder XRD and by magnetic susceptibility and specific heat measurements. The isotypic compounds crystallize in the monoclinic space group P21/n. Ca 2+ and Ln 3+ ions are partially disordered at the A site and half of the B site of the ABO3 perovskite. Ca 2+ / Ln 3+ and Ru 5+ ions are regularly ordered at the B site. The compounds order antiferromagnetically at 10-12 K due to the magnetic interactions between Ru 5+ ions. -(SASAKI, A.; DOI, Y.; HINATSU*, Y.; J. Alloys Compd. 477 (2009) 1-2, 900-904; Div. Chem., Grad. Sch. Sci., Hokkaido Univ., Sapporo 060, Japan; Eng.) -W. Pewestorf 33-023

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Structure and magnetic properties of double perovskites SrCaLnRuO6 (Ln=La, Pr, Nd)

Abstract: Abstract

Cited by 6 publications

References 19 publications

Structural and magnetic properties of the ruthenium double perovskites Ba_2−xSr_xYRuO₆

Structural and magnetic properties of the ruthenium double perovskites Ba_2−xSr_xYRuO₆

Aqueous Sol–Gel Route toward Selected Quaternary Metal Oxides with Single and Double Perovskite-Type Structure Containing Tellurium

ChemInform Abstract: Structure and Magnetic Properties of Double Perovskites SrCaLnRuO₆ (Ln: La, Pr, Nd).

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Structure and magnetic properties of double perovskites SrCaLnRuO6 (Ln=La, Pr, Nd)

Abstract: Abstract

Cited by 6 publications

References 19 publications

Structural and magnetic properties of the ruthenium double perovskites Ba2−xSrxYRuO6

Structural and magnetic properties of the ruthenium double perovskites Ba2−xSrxYRuO6

Aqueous Sol–Gel Route toward Selected Quaternary Metal Oxides with Single and Double Perovskite-Type Structure Containing Tellurium

ChemInform Abstract: Structure and Magnetic Properties of Double Perovskites SrCaLnRuO6 (Ln: La, Pr, Nd).

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Structural and magnetic properties of the ruthenium double perovskites Ba_2−xSr_xYRuO₆

Structural and magnetic properties of the ruthenium double perovskites Ba_2−xSr_xYRuO₆

ChemInform Abstract: Structure and Magnetic Properties of Double Perovskites SrCaLnRuO₆ (Ln: La, Pr, Nd).