Complex oxide nanocrystals with a spinel structure show their remarkable optical, electronic, mechanical, thermal, and magnetic properties. In this study, we present a simple yet versatile strategy to grow selfassembled epitaxial CoFe2O4 nanocrystals with well-controlled size (less than 10 nm) and single orientation. CoFe2O4 nanocrystals were fabricated via phase separation in a BiFeO3–CoF2O4 u...

Highly textured BiFeO3(001) films were formed on L10-FePt(001) bottom electrodes on glass substrates by sputtering at reduced temperature of 400°C. Good electric polarization 2Pr = 80 and 95 μC/cm2, comparable to that of the reported epitaxial films, and coercivity Ec = 415 and 435 kV/cm are achieved in the samples with 20-nm- and 30-nm-thick electrodes. The BiFeO3(001) films show different deg...

Free-standing BiFeO3 perovskite particles with a size ranging from polycrystalline bulk down to 5 nm have been studied by high-energy resonant (Bi K edge) x-ray diffraction coupled to differential atomic pair distribution function analysis. Nanosized BiFeO3 particles are found to exhibit extra, i.e., beyond the usual thermal, structural disorder that increases progressively with diminishing the...

Two Planar Pt electrodes with an inter-electrode distance of about 100 nm were fabricated at the surface of BiFeO3 thin films, which allow the manipulation of ferroelectric domain switching at nanoscale. This electrode configuration was pursued to study conductive domain-wall influence on the photovoltaic current in BiFeO3 thin films. Modulations of short-circuit photovoltaic current and hyster...

The zinc (Zn) doped bismuth ferrite (BiFeO3) have been successfully synthesized through the sol-gel autocombustion method as a microwave absorbent material composite process with silicone rubber. characterizations of nanoparticles was done using X-ray diffraction (XRD), Fourier transform infrared (FTIR), vibration sample magnetometer (VSM), and vector network analyzer (VNA). Through XRD test, n...

Two-dimensional (2D) magnets have broad application prospects in the spintronics, but how to effectively control them with a small electric field is still an issue. Here we propose that 2D can be efficiently controlled multiferroic heterostructure composed of magnetic material and perovskite oxide ferroelectric (POF) whose dielectric polarization easily flipped under field. We illustrate feasib...

BiFeO3 epitaxial films (tBFO = 1–10 nm) were grown on a LaSrMnO3 (tLSMO 70 buffer layer and capped with Ru or Ru/Al layer. The ultrathin film 3 was confirmed to be continuous flat over wide area. Piezoelectric response switching of spontaneous polarization observed in the by switching-spectroscopy piezoelectric force microscopy measurements. Using lock-in method modulation frequency 10 Hz x-ray...

Bismuth ferrite (BiFeO3) nanocomposites were synthesized using a novel nano-agitator bead milling method followed by calcination. oxide and iron nanoparticles mixed in stoichiometric ratio milled for 3 h calcined at 650 °C air. X-ray diffraction with Rietveld refinement, scanning electron microscopy, transmission microscopy techniques used to elucidate the structure of BiFeO3. The particle diam...

Researchers have demonstrated that BiFeO3 exhibits ferroelectric hysteresis but none have shown a strong ferromagnetic response in either bulk or thin film without significant structural or compositional modification. When remanent magnetisations are observed in BiFeO3 based thin films, iron oxide second phases are often detected. Using aberration-corrected scanning transmission electron micros...