Structural, electrical, magnetic and magnetoelectric properties of Co-doped BaTiO3 multiferroic ceramics

Multiferroic Properties and Magnetoelectric Coupling of Fe‐Doped (Ba0.7Ca0.3)TiO3‐Ba(Zr0.2Ti0.8)O3 Ceramics

“…The coupling between two ferroic orders provides an additional degree of freedom in the design of novel multifunctional devices. Thus multiferroics possess potential applications in information storage, spintronics, sensors, antennas, and so on . However, there are few natural single‐phase magnetoelectric materials as conventional ferroelectricity requires closed‐shell d 0 or s 2 cations, whereas ferromagnetism needs open‐shell d n configurations with unpaired electrons .…”

Structural, optical and conductivity properties in tetragonal BaTi1−xCoxO3 (0≤ x ≤0.1)

“…Other authors found the tetragonal–hexagonal phase transformation in BaTi 1− x Co x O 3 samples. 9,10,16,27 The divergences in the obtained structure of BaTi 1− x Co x O 3 originate from impurity type, annealing temperature, and sample processing condition, which affect the formation of oxygen vacancies. When the number of oxygen vacancies becomes too high, the tetragonal structure is distorted and be transformed into the hexagonal phase.…”

“…[16][17][18][19] However, it is in good agreement with the ndings of Yang et al 15 about the existence of the tetragonal phase in BaTi 1Àx Co x O 3 nanoparticles (0.0# x #0.25) prepared by the hydrothermal method at temperatures below 200 C. Other authors found the tetragonal-hexagonal phase transformation in BaTi 1Àx Co x O 3 samples. 9,10,16,27 The divergences in the obtained structure of BaTi 1Àx Co x O 3 originate from impurity type, annealing temperature, and sample processing condition, which affect the formation of oxygen vacancies. When the number of oxygen vacancies becomes too high, the tetragonal structure is distorted and be transformed into the hexagonal phase.…”

Dielectric Properties in Transition Metal and Rare‐Earth‐Doped Multiferroic BaTiO3 Nanoparticles

“…It must be mentioned that the dielectric properties of Mn [38,39] as well as Co and Ni [40,41] doped BTO ceramics and thin films can also be described with our model. The authors obtained a decrease in ϵ 0 and TC with increase in the dopant concentration.…”