Yisheng Chai

Cross coupling between electric and magnetic orders in a multiferroic metal-organic framework

The coexistence of both electric and magnetic orders in some metal-organic frameworks (MOFs) has yielded a new class of multiferroics beyond inorganic materials. However, the coupling between two orders in multiferroic MOFs has not been convincingly verified yet. Here we present clear experimental evidences of cross coupling between electric and magnetic orders in a multiferroic MOF [(CH3)2NH2]Fe(HCOO)3 with a perovskite structure. The dielelectric constant exhibit a hump just at the magnetic ordering temperature TN. Moreover, both the direct (magnetic field control of dielectric properties) and converse (electric field control of magnetization) magnetoelectric effects have been observed in the multiferroic state. This work opens up new insights on the origin of ferroelectricity in MOFs and highlights their promise as magnetoelectric multiferroics.

Magnetic-ion-induced displacive electric polarization inFeO5bipyramidal units of(Ba,Sr)Fe12O19hexaferrites

Electric polarization in conventional ferroelectric oxides usually involves nonmagnetic transition-metal ions with an empty d shell (the d

Uniaxial ferroelectric quantum criticality in multiferroic hexaferrites BaFe12O19 and SrFe12O19.

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Magnetic field reversal of electric polarization and magnetoelectric phase diagram of the hexaferrite Ba1.3Sr0.7Co0.9Zn1.1Fe10.8Al1.2O22

rule). Here we unravel a new mechanism for local electric dipoles based on magnetic Fe

Quantum electric-dipole liquid on a triangular lattice.

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Nonvolatile Memory Based on Nonlinear Magnetoelectric Effects

(3d

Moisture effects on the electrochemical reaction and resistance switching at Ag/molybdenum oxide interfaces.

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High electron mobility and large magnetoresistance in the half-Heusler semimetal LuPtBi

) ion violating the d

Nonvolatile electric-field control of magnetization in a Y-type hexaferrite

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Giant exchange bias in a single-phase magnet with two magnetic sublattices

rule. The competition between the long-range Coulomb interaction and short-range Pauli repulsion in a FeO