Dielectric Tunability, Expanding the Function of Metal‐Organic Frameworks

Guo, Jianghuai; Chen, Li‐Hong; Ke, Hao; Wang, Xuan; Zhao, Haixia; Liu, Long; Zheng, Lan‐Sun

doi:10.1002/pssr.201700425

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…Heterometallic MOFs with a general formula [NH2(CH3)2][Fe III M II (HCOO)6] (M = Fe, Co, Mn, Mg, Ni, Zn, or Cu), which crystallize in a niccolite-like topology, have been widely investigated. 22,[29][30][31][32][33][34][35][36][37][38] The combination of two magnetic metals in the same structure brings rich magnetic properties. In particular, [NH2(CH3)2][Fe III Fe II (HCOO)6] (DMAFeFe) is the first example exhibiting negative magnetization assigned as Neel N-Type ferrimagnet in a 3D molecule-based magnet.…”

Section: Introductionmentioning

confidence: 99%

First-principles study of the structural, electronic, magnetic, and ferroelectric properties of a charge-ordered iron(ii)-iron(iii) formate framework

Tang

Ren

Hong

et al. 2019

The Journal of Chemical Physics

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Density functional theory calculations have been performed for the structural, electronic, magnetic and ferroelectric properties of a mixed-valence Fe(II)-Fe(III) formate framework [NH2(CH3)2][Fe III Fe II (HCOO)6] (DMAFeFe). Recent experiments report a spontaneous electric polarization and our calculations are in agreement with the reported experimental value. Furthermore, we shed light into the microscopic mechanism leading to the observed value and as well how to possibly enhanced the polarization. The interplay between charge ordering, dipolar ordering of DMA + cations and the induced structural distortions suggest new interesting directions to explore in these complex multifunctional hybrid perovskites.

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Section: Introductionmentioning

confidence: 99%

First-principles study of the structural, electronic, magnetic, and ferroelectric properties of a charge-ordered iron(ii)-iron(iii) formate framework

Tang

Ren

Hong

et al. 2019

The Journal of Chemical Physics

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“…[83] ] n (x ≈ 0.63-0.69). [85] Our experimental data show that the relative tunability (calculated as [{ε(0) − ε(E)}/ε(0)] × 100%) of [NH 2 (CH 3 ) 2 ] n [Fe III Fe II (HCOO) 6 ] n can reach up to 35% for E⊥c at 410 K, but 21% for E||c at 380 K. However, the relative tunability is remarkably suppressed by the Ni 2+ -ion doping effect at the B-site; this results in the tunability values of only 14% for E⊥c and 11.5% for E||c.…”

Section: Effect Of Inorganic-organic Hybrid Multiferroic Materialsmentioning

confidence: 99%

Inorganic–Organic Hybrid Molecular Materials: From Multiferroic to Magnetoelectric

Liu

Zhao

et al. 2021

Advanced Materials

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Inorganic-organic hybrid molecular multiferroic and magnetoelectric materials, similar to multiferroic oxide compounds, have recently attracted increasing attention because they exhibit diverse architectures, a flexible framework, fascinating physics, and potential magnetoelectric functionalities in novel multifunctional devices such as energy transformation devices, sensors, and information storage systems. Herein, the classification of multiferroicity and magnetoelectricity is briefly outlined and then the recent advances in the multiferroicity and magnetoelectricity of inorganic-organic hybrid molecular materials, particularly magnetoelectricity and the relevant magnetoelectric mechanisms and their categories are summarized. In addition, a personal perspective and an outlook are provided.

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Multiferroic and thermal expansion properties of metal-organic frameworks

Sun

2020

Journal of Applied Physics

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As a prototype of organic–inorganic hybrid compounds, metal-organic frameworks (MOFs) have attracted enormous interest for their diverse physical and chemical properties. Recently, the magnetic and electric properties of MOFs have started to draw much attention. In particular, the coexistence of multiple orders (magnetic, electric, and elastic) in some MOFs makes them as emerging multiferroic materials. In terms of the strong and tunable ferroelectricity, the long-distance superexchange interaction, the order–disorder transition of hydrogen bonds in combination with the structural flexibility, and multiferroic MOFs represent a unique family beyond conventional inorganic multiferroics. This perspective provides a brief overview of recent progress in the field of multiferroic MOFs. First, the multiferroic MOFs reported so far are summarized and classified. Then, various cross coupling effects, i.e., the magnetic field control of electric polarization, electric field manipulation of magnetization, and pressure tuning of magnetic and electric properties, are described and discussed. In addition, a number of unusual phenomena such as the giant thermal expansion and quantum effects are introduced. Finally, some promising topics that have not yet been fully explored in multiferroic MOFs are proposed.

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Dielectric Tunability, Expanding the Function of Metal‐Organic Frameworks

Cited by 5 publications

References 25 publications

First-principles study of the structural, electronic, magnetic, and ferroelectric properties of a charge-ordered iron(ii)-iron(iii) formate framework

First-principles study of the structural, electronic, magnetic, and ferroelectric properties of a charge-ordered iron(ii)-iron(iii) formate framework

Inorganic–Organic Hybrid Molecular Materials: From Multiferroic to Magnetoelectric

Multiferroic and thermal expansion properties of metal-organic frameworks

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