نتایج جستجو برای: multiferroic materials
تعداد نتایج: 437995 فیلتر نتایج به سال:
Multiferroic tunneling junction based four-state non-volatile memories are very promising for future memory industry since this kind of memories hold the advantages of not only the higher density by scaling down memory cell but also the function of magnetically written and electrically reading. In this work, we demonstrate a success of this four-state memory in a material system of NiFe/BaTiO3/...
We show by means of ab initio calculations that the organic molecular crystal TTF-CA is multiferroic: it has an instability to develop spontaneously both ferroelectric and magnetic ordering. Ferroelectricity is driven by a Peierls transition of the TTF-CA in its ionic state. Subsequent antiferromagnetic ordering strongly enhances the opposing electronic contribution to the polarization. It is s...
We present a theoretical study of the onset electric polarization close to surface in magnetic materials and thin films multilayers. consider two different paths that lead multiferroic behavior at boundary are bulk collinear ferromagnets or antiferromagnets. These distinguished by presence absence induced Dzyaloshinskii-Moriya interaction which can be taken into account through Lifshitz invaria...
Magnetoelectric effects are discussed in multiferroics with the perovskite structure: bismuth ferrite, rare-earth orthochromites, and Ruddlesden--Popper structures belonging to trigonal, orthorhombic, tetragonal syngonies. The influence of structural distortions on magnetic ferroelectric properties is studied, possible magnetoelectric (linear, quadratic, inhomogeneous) these materials determine...
Retraction of 'Light-controlled resistive switching memory of multiferroic BiMnO3 nanowire arrays' by Bai Sun and Chang Ming Li, Phys. Chem. Chem. Phys., 2015, 17, 6718-6721.
Single phase Eu doped GdMnO3 ceramics were prepared using solid state reaction route. Several different characterization techniques were used to investigate the structural and magnetic properties of the samples, including X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDX) and Vibrating Sample Magnetometer (VSM). All samples indicated single p...
The temperature dependences (100-380 K) of the dielectric constant and conductivity a ceramic multiferroic LuFe 2 O 4 with oxygen nonstoichiometry, measured at alternating current (1, 10, 100 kHz, 1 MHz) in static electric field (0-7.1 V/mm), are presented. regularity sign inversion dynamic permittivity caused by appearance solid-state inductance samples is discussed. Keywords: negative permitt...
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