Manipulating the structural and magnetic properties of double perovskite Y2NiMnO6 thin films by oxygen pressure and buffer layer

Shen, Lei; Meng, Zhi; Liu, Wenyi; Xu, Xueli; Sun, Tao; Liu, Yonglai; Zhu, Wenjie; Huang, Haoliang; Zhang, Ranran; Zhang, Shile; Ma, Zongwei; Zhou, Chun; Pi, Li; Lu, Yalin; Sheng, Zhigao

doi:10.1016/j.jmmm.2020.167427

Cited by 6 publications

(5 citation statements)

References 37 publications

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“…The Mn 2p 3/2 core level located at 641.04 eV is depicted in Figure 3D, which is also deconvoluted into two components positioned at 641.55 eV (Mn 3+ ) and 643.06 eV (Mn 4+ ), respectively. Their positions match well with that previously reported for Mn 3+ and Mn 4+ ions 46 . Two species of oxygens are also revealed in the O 1s XPS spectrum (Figure 3E), where the two sub‐peaks located at 528.61 and 530.86 eV correspond to the lattice oxygen (represented as O α ) and the adsorbed oxygen (represented as O β ), respectively 47 .…”

Section: Resultssupporting

confidence: 89%

“…Their positions match well with that previously reported for Mn 3+ and Mn 4+ ions. 46 Two species of oxygens are also revealed in the O 1s XPS spectrum (Figure 3E), where the two sub-peaks located at 528.61 and 530.86 eV correspond to the lattice oxygen (represented as O α ) and the adsorbed oxygen (represented as O β ), respectively. 47 Based on the above XPS data, the compositional molar percentage ratios of [Fe 3+ ]/[Fe 4+ ] and [Mn 3+ ]/[Mn 4+ ] ions were determined to be 39.82%:60.18% and 65.94%:34.06%, respectively.…”

Section: Xps Spectramentioning

confidence: 94%

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Microstructures and physical properties of sol–gel derived Ba₂FeMnO₆ double perovskite

Tang

et al. 2023

J Am Ceram Soc.

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We report microstructures and physical (dielectric, magnetic, and optical) properties of sol-gel derived Ba 2 FeMnO 6 (BFMO) double perovskite powders. The BFMO powders belong to hexagonal crystal structure with P-6m2 space group. SEM images reveal the powders are nearly homogeneous distribution with spherical morphology and average particle size of 300 nm. Energy-dispersive spectra gave out the molar ratio of the Ba:Fe:Mn elements equal to 2.16:1.00:1.00.FTIR spectrum verified the [FeO 6 ] and [MnO 6 ] octahedra present in the powders. X-ray photoelectron spectroscopy spectra identified the chemical valence states of the constituent elements. The BFMO ceramics displayed a strong frequency dispersion dielectric behavior. A relaxor-like dielectric behavior appeared around ∼475 K due to the contributions of oxygen vacancies of(𝑉 ö) and the (Fe ′ Mn −)∕(Mn ′ Fe −) defect dipoles. A ferrimagnetic behavior was observed in the powders at 5 K with M S = 0.14 μ B /f.u. and H C = 1.51 kOe. The magnetic Curie temperature (T C ) was 381 K, whereas the Neel temperature (T N ) was 31 K. The ferrimagnetic behavior is governed by the Mn 3+ -Fe 4+ double-exchange interaction via the mediated oxygen between them. The BFMO powders have a direct optical bandgap of 1.65 eV, which originates from the electron transferring from O 2p to Mn 3d (and/or Fe 3d) levels. The unique combination of high temperature ferrimagnetism and semiconductivity in the BFMO powders makes them particularly appealing for magnetic spintronics and photovoltaics.

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Section: Resultssupporting

confidence: 89%

Section: Xps Spectramentioning

confidence: 94%

Microstructures and physical properties of sol–gel derived Ba₂FeMnO₆ double perovskite

Tang

et al. 2023

J Am Ceram Soc.

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“…30 Figure 2C presents the XPS spectrum of the Mn 2p core level, which is also split into two sub-peaks Mn 2p 3/2 (located at 641.8 eV) and Mn 2p 1/2 (located at 653.7 eV), respectively, due to the SOC effect. These BE values indicate the presence of Mn 3+ species and are consistent with the findings of Shen et al 31 Similarly, in Figure 2D, the Fe 2p XPS spectrum is split into two sub-peaks due to the SOC effect. These sub-peaks are positioned at the BE values of 711.2 and 725.1 eV, respectively, which are typical for Fe 3+ species.…”

Section: Structural Characterizationsupporting

confidence: 91%

Structural, dielectric, magnetic, optical, and electrical properties of double‐perovskite Sr_1.5Mn_0.5Fe_0.5Hf_1.5O₆ oxides

Tang,

Zhu

2023

J Am Ceram Soc.

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Half‐metallic ferromagnets (HMFs) exhibit semiconductor behavior for one spin projection and metal characteristics for the other, which have promising applications in spintronics. It is a great challengeable for HMFs to have wide spin energy gap, large saturation magnetization (MS), and high Curie temperature (TC) simultaneously. Here, we report the Sr1.5Mn0.5Fe0.5Hf1.5O6 (SMFHO) double perovskite compounds synthesized by solid‐state reaction and display a magnetic TC up to 804 K due to the strong Mn3+(↑)Fe3+(↑) spin interactions, which is the reported record in perovskite‐type HMFs so far. The measured MS value at 300 K was 4.87 μB/f.u., and it further increased up to 6.09 μB/f.u. at 2 K. The SMFHO powders exhibited butterfly‐shaped magnetoresistance (MR)–H curve at 2 K, and the MR (2 K, 7 T) value was measured as −3.86% due to the intergranular magnetic tunneling effect. Variation of the resistivity of the SMFHO ceramics versus temperature exhibits a semiconductor behavior, and the electrical transport properties of the SMFHO ceramics are well studied by Mott's range jump model, thermally activated semiconductor conductance model and small polaron jumping model, respectively. The optical absorption spectrum of the SMFHO powders demonstrates an indirect optical bandgap of 3.56 eV. Our present work demonstrates the intriguing properties of the SMFHO oxides where high TC, wide energy gap, and large MS value are preserved at the same time, which open the way to their promising applications in advanced spintronic devices at or beyond room temperature.

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“…The growth details were reported previously. [34,35] The Au thin transducer film was deposited by the thermal evaporation method. A 200 mg mL −1 PDMS solution in toluene was prepared utilizing the base/cross-linker ratio of 10:1.…”

Section: Methodsmentioning

confidence: 99%

“…[14] In order to improve the photon-phonon conversion efficiency further, two perovskite oxides with a similar structure to the STO and meeting the key characteristics of pho-toacoustic transducer applications have become the candidate objects of our attention. [34][35][36][37] We deposited dielectric Y 2 NiMnO 6 (YNMO) film and semiconducting LRO film on the STO crystals, respectively, by the pulsed laser deposition technique. [38,39] As shown in Figure 2, there are obvious transient reflectivity oscillation, as well as coherent acoustic phonons, can be observed in both YNMO/STO and LRO/STO structures.…”

Section: Transducer Layer Effect On the Coherent Phononsmentioning

confidence: 99%

Coherent Phonon‐Induced Gigahertz Optical Birefringence and Its Manipulation in SrTiO₃

et al. 2023

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Birefringence, which modulates the polarization of electromagnetic wave, has been commercially developed and widely used in modern photonics. Fostered by high-frequency signal processing and communications, feasible birefringence technologies operating in gigahertz (GHz) range are highly desired. Here, a coherent phonon-induced GHz optical birefringence and its manipulation in SrTiO 3 (STO) crystals are demonsrated. With ultrafast laser pumping, the coherent acoustic phonons with low damping are created in the transducer/STO structures. A series of transducer layers are examined and the optimized one with relatively high photon-phonon conversion efficiency, i.e., semiconducting LaRhO 3 film, is obtained. The most intriguing finding here is that, by virtue of high sensitivity to strain perturbation of STO, GHz optical birefringence can be induced by the coherent acoustic phonons and the birefringent amplitudes possess crystal orientation dependence. Optical manipulation of both coherent phonons and its induced GHz birefringence by double pump technique are also realized. These findings reveal an alternative mechanism of ultrafast optical birefringence control, and offer prospects for applications in high-frequency acoustic-optics devices.

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Manipulating the structural and magnetic properties of double perovskite Y2NiMnO6 thin films by oxygen pressure and buffer layer

Cited by 6 publications

References 37 publications

Microstructures and physical properties of sol–gel derived Ba₂FeMnO₆ double perovskite

Microstructures and physical properties of sol–gel derived Ba₂FeMnO₆ double perovskite

Structural, dielectric, magnetic, optical, and electrical properties of double‐perovskite Sr_1.5Mn_0.5Fe_0.5Hf_1.5O₆ oxides

Coherent Phonon‐Induced Gigahertz Optical Birefringence and Its Manipulation in SrTiO₃

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Manipulating the structural and magnetic properties of double perovskite Y2NiMnO6 thin films by oxygen pressure and buffer layer

Cited by 6 publications

References 37 publications

Microstructures and physical properties of sol–gel derived Ba2FeMnO6 double perovskite

Microstructures and physical properties of sol–gel derived Ba2FeMnO6 double perovskite

Structural, dielectric, magnetic, optical, and electrical properties of double‐perovskite Sr1.5Mn0.5Fe0.5Hf1.5O6 oxides

Coherent Phonon‐Induced Gigahertz Optical Birefringence and Its Manipulation in SrTiO3

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Product

Resources

About

Microstructures and physical properties of sol–gel derived Ba₂FeMnO₆ double perovskite

Microstructures and physical properties of sol–gel derived Ba₂FeMnO₆ double perovskite

Structural, dielectric, magnetic, optical, and electrical properties of double‐perovskite Sr_1.5Mn_0.5Fe_0.5Hf_1.5O₆ oxides

Coherent Phonon‐Induced Gigahertz Optical Birefringence and Its Manipulation in SrTiO₃