High pressure enhanced magnetic ordering and magnetostructural coupling in the geometrically frustrated spinel 
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Козленко, Д. П.; Dang, N. T.; Кичанов, С. Е.; Thảo, Lê Thị Phương; Rutkaukas, A. V.; Лукин, Е. В.; Савенко, Б. Н.; Tran, N.; Khan, D.T.; Truong-Son, L. V.; Khiem, L. H.; Lee, Bo Wha; Phan, The‐Long; Phan, Ngoc-Loan; Tho, Nguyen Truong; Hieu, Nguyen N.; Tran, T. A.; Phan, M. H.

doi:10.1103/physrevb.105.094430

Cited by 7 publications

(2 citation statements)

References 55 publications

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“…It should be noticed that there is not any FM contribution to the intensity of the structural reflections (101)/(020) at d hkl = 3.83 Å, indicating the absence of any FM component of the AFM phase or a long-range FM phase. Figure 3 depicts the temperature-dependent evolution of the average magnetic moment μ AFM (T) and its fitting curve by the emperical function [24]:…”

Section: Resultsmentioning

confidence: 99%

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO₆

Tran,

Hoang,

Khan

et al. 2024

Mater. Res. Express

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Double perovskite alloys are of significant interest owing to their intriguing magnetic properties and potential practical applications. In this study, we provided a detailed report on the structural, electrical and magnetic features of the double perovskite LaCaMnFeO6, prepared via the conventional solid-state reaction technique. Neutron diffraction analysis showed that the sample is single-phase adopting the Pnma orthorhombic structure with random distribution of La3+/Ca2+ and Mn4+/Fe3+ ions on A- and B-sites, respectively. A long-range G-type antiferromagnetic order was formed below TN = 250 K. Magnetic measurements unveiled a cluster glassy behavior at low temperatures with a complex distribution of cluster magnetic anisotropy energy. Ferromagnetic clusters consisting of two Mn4+ and one Fe3+ were found to exist in the paramagnetic phase. The complex magnetic properties of LaCaMnFeO6 are attributed to the cation disorder effect combined with the competition between magnetic interactions. Unusual electrical behavior with a large positive magnetoresistive effect was observed and correlated to magnetic phase transitions.

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Section: Resultsmentioning

confidence: 99%

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO₆

Tran,

Hoang,

Khan

et al. 2024

Mater. Res. Express

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“…Mn 3 O 4 is a magnetic oxide known for its non-layered tetragonal spinel structure. 23 At room temperature, it adopts the stable tetragonal hausmannite structure with the I41/amd (141) space group. In this structure, Mn 3+ and Mn 2+ ions occupy octahedral and tetrahedral sites, respectively.…”

Section: Synthesis Of High-quality Ultrathin Mn 3 O 4 Arraysmentioning

confidence: 99%

Controllable Synthesis of Nonlayered Ultrathin Mn3O4 with High Dielectric Constant

Liu,

Yuan,

Jian

et al. 2024

Preprint

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Two-dimensional (2D) materials have been identified as promising candidates for future electronic devices. However, high dielectric constant (κ) materials, which can be integrated with 2D semiconductors, are still very rare. This study employed a hydrate-assisted thinning chemical vapor deposition (CVD) technique combined with a strategy of minimizing substrate lattice mismatch, achieving precise control over the growth kinetics, enabling the controllable array growth of ultrathin manganese oxide (Mn3O4), demonstrating an extraordinary dielectric constant of 237, an equivalent oxide thickness (EOT) as low as 0.57 nm, and a breakdown field strength (Ebd) exceeding 10 MV/cm, marking it as a superior gate dielectric material. MoS2 field-effect transistors (FETs) integrated with ultrathin Mn3O4 through mechanical stacking method operate under ultra-low voltages (<1 V), achieving a near 108 Ion/Ioff ratio and a subthreshold swing (SS) as low as 84 mV/dec. The MoS2 FET exhibit nearly zero hysteresis (~5 mV) and an extremely low drain-induced barrier lowering (~20 mV/V). This work further expands the family of 2D high-κ dielectric materials and provides a feasible exploration for the epitaxial growth of single-crystal thin films of non-layered materials.

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Phase Engineering of 2D Spinel‐Type Manganese Oxides

et al. 2023

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Two‐dimensional (2D) magnetic materials have been of interest due to their unique long‐range magnetic ordering in the low‐dimensional regime and potential applications in spintronics. Currently, most of the studies are focused on strippable van der Waals magnetic materials with layered structures, which typically suffer from a poor stability and scarce species. Spinel oxides have a good environmental stability and rich magnetic properties. However, the isotropic bonding and close‐packed nonlayered crystal structure make their 2D growth challenging, let alone the phase engineering. Herein, we report a phase‐controllable synthesis of 2D single‐crystalline spinel‐type oxides for the first time. Using the van der Waals epitaxy strategy, the thicknesses of the obtained tetragonal and hexagonal manganese oxide (Mn3O4) nanosheets can be tuned down to 7.1 nm and one unit cell (0.7 nm), respectively. The magnetic properties of these two phases are evaluated using vibrating‐sample magnetometry and first‐principle calculations. Both structures exhibit a Curie temperature of 48 K. Owing to its ultrathin geometry, the Mn3O4 nanosheet exhibits a superior ultraviolet detection performance with an ultralow noise power density of 0.126 pA/Hz1/2. This study broadens the range of 2D magnetic semiconductors and highlights their potential applications in future information devices.This article is protected by copyright. All rights reserved

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High pressure enhanced magnetic ordering and magnetostructural coupling in the geometrically frustrated spinel Mn3O4

Cited by 7 publications

References 55 publications

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO₆

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO₆

Controllable Synthesis of Nonlayered Ultrathin Mn3O4 with High Dielectric Constant

Phase Engineering of 2D Spinel‐Type Manganese Oxides

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High pressure enhanced magnetic ordering and magnetostructural coupling in the geometrically frustrated spinel Mn3O4

Cited by 7 publications

References 55 publications

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO6

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO6

Controllable Synthesis of Nonlayered Ultrathin Mn3O4 with High Dielectric Constant

Phase Engineering of 2D Spinel‐Type Manganese Oxides

Contact Info

Product

Resources

About

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO₆

Anomalous magnetic and electrical properties of disordered double perovskite alloy LaCaMnFeO₆