Topologically protected magnetoelectric switching in a multiferroic

Ultralow Tip‐Force Driven Sizable‐Area Domain Manipulation through Transverse Flexoelectricity

“…The electrical field is a conventional and efficient way to switch the ferroelectric domains, but ferroelectric device performance may be degraded due to the leakage and/or dielectric breakdown, [ 9 ] or the surface damage from ionic migration [ 10 ] during the electrical switching. Some alternative domain switching approaches through magnetic field, [ 11 ] light, [ 12 ] water‐solution [ 13 ] or mechanical force, [ 14 ] etc, have been developed to address such issues.…”

Enantiomeric Hydrogen-bonded Chains Driving Ferroelectric and Nonlinear Optical Behavior

“…17−19 From this point of view, the construction of ferroic materials should involve some specific components, which would undergo thermodynamic structural phase transitions. DABCO (1,4-diazabicyclo[2.2.2]octane), as a typical spherical molecule, is the preferred building block for constructing ferroic materials, which could easily undergo an orientational disorder and a dynamic rotation in response to temperature. 20,21 To date, many DABCO-based ferroelectrics have been developed with pronounced physical properties, including perovskites, organic−inorganic hybrid complexes, and acid−base ionic crystals.…”

“…With the arrival of the big data era, multiferroic materials that have more than one type of ferroic order in the same phase of one material can produce a wealth of new possibilities for data memory . These functional materials possess a wide range of applications in sensors and logical devices, such as magnetic sensors, magnetoelectric memory, and voltage-driven magnetic tunnel junctions. − They have attracted particular interest mainly because of the novel functionalities induced from the coupling/coexistence between the ferromagnetic and the ferroelectric orders. ,− Among them, ferroelectric materials always possess abundant physical properties, including piezoelectricity, pyroelectricity, second harmonic nonlinear optics, and so on.…”

“…With the arrival of the big data era, multiferroic materials that have more than one type of ferroic order in the same phase of one material can produce a wealth of new possibilities for data memory . These functional materials possess a wide range of applications in sensors and logical devices, such as magnetic sensors, magnetoelectric memory, and voltage-driven magnetic tunnel junctions. − They have attracted particular interest mainly because of the novel functionalities induced from the coupling/coexistence between the ferromagnetic and the ferroelectric orders. ,− Among them, ferroelectric materials always possess abundant physical properties, including piezoelectricity, pyroelectricity, second harmonic nonlinear optics, and so on. To date, the ones that shine light in investigations and utilizations are the inorganic perovskite-type oxides, such as BaTiO 3 (BTO), Pb­(Zr, Ti)­O 3 (PZT), and BiFeO 3 (BFO) on account of their exceptional physical performance. − Nevertheless, to address the problem of energy, environment, and biocompatibility faced by inorganic ceramics, organic small-molecular functional materials are promising supplements for inorganic counterparts due to their light weight, easy and environment-friendly processing, mechanical flexibility, low acoustic impedance, and satisfying biocompatibility. − However, the scarce discovery of organic small-molecular multiferroic materials offers limited scope for their development and further applications. , …”

Room‐Temperature Magnetoelectric Coupling in Atomically Thin ε‐Fe2O3

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coupling in multiferroics has attracted considerable research interests due to the wide range of applications in high-density information storages and low-energyconsumption spintronic devices. [7][8][9][10][11][12][13][14] Notably, the manipulation of magnetism by electric field has shown the transformative potential in the next-generation logic devices. [15][16][17][18][19][20][21][22][23][24] Nevertheless, the magnetoelectric coupling is extremely weak in traditional type-I multiferroics because of the mutually exclusive origins between ferroelectricity and ferromagnetism.

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