Four-State Nonvolatile Memories In article number 2208244, Deyang Chen and co-workers report that four-state polarization states in multiferroic BiFeO3 thin films are deterministically achieved reversibly controlled through precisely selecting 71° ferroelastic 180° ferroelectric switching paths. This study provides the platform for realization of multi-state memories magnetoelectric coupling ba...

The complex dielectric permittivity of a sintered ceramic tablet consisting 70.5% BiFeO3, 27.7% Bi2Fe4O9 and 1.8% Bi25FeO40 was analyzed as function temperature from – 120 °C to 230 in two separate runs. results reveal complicated response with activated relaxation processes. first is purely Arrhenius related hopping processes between Fe3+ Fe2+ traps induced by oxygen vacancies at grain boundar...

The charge-spin interactions in multiferroic materials (e.g., BiFeO3) have attracted enormous attention due to their high potential for next generation information electronics. However, the weak and deficient manipulation of charge-spin coupling notoriously limits their commercial applications. To tailor the spontaneous charge and the spin orientation synergistically in BiFeO3 (BFO), in this re...

Nanocrystals (NCs) attract tremendous research interests because of their unique properties to meet the demands of functionalities. To date, hybrid NCs with multiple components are developed to meet the rising demands that could be very difficult, or even impossible to be achieved by single-component NCs. Tuning properties by strain via conjugation could be an alternative solution. Strain engin...

The promise of coupling between magnetization and electric polarization and the potential to manipulate one through the other has become in recent years a driving force for many experimental works on multiferroic materials. The ultimate goal of these studies would be a single-phase material exhibiting a strong coupling between inherent ferromagnetic and ferroelectric ordering at room temperatur...