High-pressure A-site manganites: Structures and magnetic properties

Solana‐Madruga, Elena; Arévalo‐López, Ángel M.

doi:10.1016/j.jssc.2022.123470

Cited by 7 publications

(15 citation statements)

References 76 publications

(127 reference statements)

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“…2,3 This is the case, for instance, of A-site manganites, where perovskite and corundum related structures are reported with a rich variety of cation ordered superstructures. 4…”

Section: Introductionmentioning

confidence: 99%

“…2,3 This is the case, for instance, of A-site manganites, where perovskite and corundum related structures are reported with a rich variety of cation ordered superstructures. 4 Two high pressure polymorphs of MnVO 3 were first reported in 1970. The initial structural characterization revealed a triclinic distortion P% 1 of an ilmenite-type structure (MnVO 3 -I) and an orthorhombic (Pnma) perovskite (MnVO 3 -II) for the low-and the high-pressure phases below and above 4 GPa respectively.…”

Section: Introductionmentioning

confidence: 99%

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High-pressure ilmenite-type MnVO₃: crystal and spin structures in the itinerant-localized regimes

et al. 2023

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“…2,3 This is the case, for instance, of A-site manganites, where perovskite and corundum related structures are reported with a rich variety of cation ordered superstructures. 4…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-pressure ilmenite-type MnVO₃: crystal and spin structures in the itinerant-localized regimes

et al. 2023

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“…For example, RCrO 3 compounds with rare-earth elements R = La-Lu adopt G-type antiferromagnetic (AFM) structures, while InCrO 3 and ScCrO 3 already have C-type AFM structures [ 4 , 7 ]. Some MnBO 3 compounds exhibit complex incommensurate magnetic structures at the A sites and other interesting physical properties [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Ferrimagnetic Ordering and Spin-Glass State in Diluted GdFeO3-Type Perovskites (Lu0.5Mn0.5)(Mn1−xTix)O3 with x = 0.25, 0.50, and 0.75

et al. 2023

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ABO3 perovskite materials with small cations at the A site, especially those with ordered cation arrangements, have attracted a great deal of interest because they show unusual physical properties and deviations from the general characteristics of perovskites. In this work, perovskite solid solutions (Lu0.5Mn0.5)(Mn1−xTix)O3 with x = 0.25, 0.50, and 0.75 were synthesized by means of a high-pressure, high-temperature method at approximately 6 GPa and approximately 1550 K. All the samples crystallize in the GdFeO3-type perovskite structure (space group Pnma) and have random distributions of the small Lu3+ and Mn2+ cations at the A site and Mn4+/3+/2+ and Ti4+ cations at the B site, as determined by Rietveld analysis of high-quality synchrotron X-ray powder diffraction data. Lattice parameters are a = 5.4431 Å, b = 7.4358 Å, c = 5.1872 Å (for x = 0.25); a = 5.4872 Å, b = 7.4863 Å, c = 5.2027 Å (for x = 0.50); and a = 5.4772 Å, b = 7.6027 Å, c = 5.2340 Å (for x = 0.75). Despite a significant dilution of the A and B sublattices by non-magnetic Ti4+ cations, the x = 0.25 and 0.50 samples show long-range ferrimagnetic order below TC = 89 K and 36 K, respectively. Mn cations at both A and B sublattices are involved in the long-range magnetic order. The x = 0.75 sample shows a spin-glass transition at TSG = 6 K and a large frustration index of approximately 22. A temperature-independent dielectric constant was observed for x = 0.50 (approximately 32 between 5 and 150 K) and for x = 0.75 (approximately 50 between 5 and 250 K).

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“…Many interesting and useful oxide materials are based on the ABO 3 perovskite type, [1,2] and cation ordering can lead to further properties such as ferrimagnetism and large magnetoresistance in Sr 2 FeMoO 6 and related A 2 BB'O 6 double perovskites. [3,4,5,6,7] High pressure can be used to stabilize perovskites with the small high spin Mn 2 + ion at A-sites, [8] for example, MnVO 3 which has helimagnetic order at low temperatures. [9] Mn 2 + -based double perovskites have also been prepared at pressure; Mn 2 BSbO 6 for B = Sc, [10] Cr, [11] and Fe [12] which has low temperature incommensurate Mn spin order; and the Mn 2 BReO 6 series for B = Mn, [13] Fe, [14,15] Co, [16] and Ni.…”

Section: Introductionmentioning

confidence: 99%

Coexisting commensurate and incommensurate magnetic orders in the double double perovskite CaMnCoWO₆

Attfield

Chen

et al. 2023

Zeitschrift anorg allge chemie

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A new double double perovskite of ideal composition CaMnCoWO6 has been synthesised at high pressure. The structure is tetragonal (P42/n, a=7.6651(3), c=7.6822(3) Å) and disorder between A‐site Mn2+ and B‐site Co2+ leads to a Co‐rich off‐stoichiometric composition CaMn0.8Co1.2WO6 [Ca(Mn0.65Co0.35) (Co0.86Mn0.14)WO6]. An unusual combination of commensurate and incommensurate spin orders (A‐site Mn/Co spins with propagation vector (0.5 0.5 0.5) and B‐site Co/Mn spins with (0.5 0.42 0.5)) is observed below a magnetic transition at TC=18 K. This is the first discovery of complex magnetism in the double double perovskite family.

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High-pressure A-site manganites: Structures and magnetic properties

Cited by 7 publications

References 76 publications

High-pressure ilmenite-type MnVO₃: crystal and spin structures in the itinerant-localized regimes

High-pressure ilmenite-type MnVO₃: crystal and spin structures in the itinerant-localized regimes

Ferrimagnetic Ordering and Spin-Glass State in Diluted GdFeO3-Type Perovskites (Lu0.5Mn0.5)(Mn1−xTix)O3 with x = 0.25, 0.50, and 0.75

Coexisting commensurate and incommensurate magnetic orders in the double double perovskite CaMnCoWO₆

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High-pressure A-site manganites: Structures and magnetic properties

Cited by 7 publications

References 76 publications

High-pressure ilmenite-type MnVO3: crystal and spin structures in the itinerant-localized regimes

High-pressure ilmenite-type MnVO3: crystal and spin structures in the itinerant-localized regimes

Ferrimagnetic Ordering and Spin-Glass State in Diluted GdFeO3-Type Perovskites (Lu0.5Mn0.5)(Mn1−xTix)O3 with x = 0.25, 0.50, and 0.75

Coexisting commensurate and incommensurate magnetic orders in the double double perovskite CaMnCoWO6

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High-pressure ilmenite-type MnVO₃: crystal and spin structures in the itinerant-localized regimes

High-pressure ilmenite-type MnVO₃: crystal and spin structures in the itinerant-localized regimes

Coexisting commensurate and incommensurate magnetic orders in the double double perovskite CaMnCoWO₆