scholarly journals Compositional dependence of ferromagnetic and magnetoelectric effect properties in BaTiO3–BiFeO3–LaFeO3 solid solutions

RSC Advances ◽  
2017 ◽  
Vol 7 (82) ◽  
pp. 51801-51806 ◽  
Author(s):  
Xiwei Qi ◽  
Min Zhang ◽  
Xiaoyan Zhang ◽  
Yaohang Gu ◽  
Hongen Zhu ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Magnetoelectric Effect ◽  
Compositional Dependence ◽  
Maximum Value ◽  
Magnetoelectric Coefficient

The maximum value of the magnetoelectric coefficient reached 354 mV (cm−1 Oe−1) for the ceramic with x = 0.4.

scholarly journals The Magnetoelectric Effect of a Ni0.3Zn0.62Cu0.08Fe2O4 - PbFe0.5Nb0.5O3 Multilayer Composite

2014 ◽  
Vol 59 (3) ◽  
pp. 1011-1015
Author(s):  
P. Guzdek ◽  
M. Sikora ◽  
Ł. Góra ◽  
Cz. Kapusta
Keyword(s):  
Magnetic Field ◽  
Magnetoelectric Effect ◽  
Magnetic Hysteresis ◽  
Tape Casting ◽  
Casting Process ◽  
Layered Composites ◽  
Practical Applications ◽  
Magnetoelectric Composite ◽  
Sinusoidal Magnetic Field ◽  
Magnetoelectric Coefficient

Abstract The magnetoelectric effect in multiferroic materials has been widely studied for its fundamental interest and practical applications. The magnetoelectric effect observed for single phase materials like Cr2O3, BiFeO3, and Pb(Fe0.5Nb0.5)O3 is usually small. A much larger effect can be obtained in composites consisting of magnetostrictive and piezoelectric phases. This paper investigates the magnetoelectric effect of a multilayer (laminated) structure consisting of 6 nickel ferrite and 7 PFN relaxor layers. It describes the synthesis and tape casting process for Ni0.3Zn0.62Cu0.08Fe2O4 ferrite and relaxor PbFe0.5Nb0.5O3 (PFN). Magnetic hysteresis, ZFC - FC curves and dependencies of magnetization versus temperature for PFN relaxor and magnetoelectric composite were measured with a vibrating sample magnetometer (VSM) in an applied magnetic field up to 85 kOe at a temperature range of 10 – 400 K. Magnetoelectric effect at room temperature was investigated as a function of a static magnetic field (0.3 - 6.5 kOe) and the frequency of sinusoidal magnetic field (0.01 - 6.5 kHz). At lower magnetic field, the magnetoelectric coefficient increases slightly before reaching a maximum and then decreases. The magnetoelectric coefficient aME increases continuously as the frequency is raised, although this increase is less pronounced in the 1-6.5 kHz range. Maximum values of the magnetoelectric coefficient attained for the layered composites exceed about 50 mV/(Oe cm).

Temperature Characteristics of Magnetoelectric Effect in Bilayer Ferromagnetic-Piezoelectric Structures

2015 ◽  
Vol 233-234 ◽  
pp. 357-359 ◽  
Author(s):  
Dmitry Burdin ◽  
Dmitry Chashin ◽  
Nikolay Ekonomov ◽  
Yuri Fetisov
Keyword(s):  
Magnetic Field ◽  
Resonant Frequency ◽  
Temperature Dependence ◽  
Lead Zirconate Titanate ◽  
Magnetoelectric Effect ◽  
Lead Zirconate ◽  
Magnetic Field Sensors ◽  
Temperature Characteristics ◽  
Magnetoelectric Coefficient ◽  
Piezoelectric Structures

Temperature characteristics of resonant magnetoelectric effect in bilayer structures consisting of langatate, lead zirconate titanate, nickel, and amorphous ferromagnetic Metglas layers have been investigated. The measurements were performed in the temperature range of 150-400 K. The influence of the ferromagnetic and piezoelectric layer’s parameters on the temperature dependence of resonant frequency and magnetoelectric coefficient αE has been demonstrated. The results can be used to develop magnetoelectric magnetic field sensors.

Compositional dependence of disordered structures in Na ½ Bi ½ TiO 3 -BaTiO 3 solid solutions

2018 ◽  
Vol 106 ◽  
pp. 301-306 ◽  
Author(s):  
Patrick K.M. Tung ◽  
Márton Major ◽  
Jessica Hudspeth ◽  
John E. Daniels
Keyword(s):  
Solid Solutions ◽  
Compositional Dependence ◽  
Disordered Structures

Magnetoelectric anisotropy in laminate composite for detecting magnetic field

2019 ◽  
Vol 12 (01) ◽  
pp. 1850098 ◽  
Author(s):  
Li Lv ◽  
Xi Yao ◽  
Lin Gan ◽  
Xiaoli Zhang ◽  
Jian-Ping Zhou
Keyword(s):  
Magnetic Field ◽  
Phase Shift ◽  
Laminate Composite ◽  
Magnetoelectric Effect ◽  
Bias Magnetic Field ◽  
Magnetic Signal ◽  
Two Phase ◽  
Ac Magnetic Field ◽  
Dc Bias ◽  
Magnetoelectric Coefficient

Magnetoelectric anisotropy was researched in a disc laminate composite. The magnetoelectric coefficient exhibits a cosine characteristic with the angle between the direction of dc bias magnetic field [Formula: see text] and small ac sine magnetic signal [Formula: see text], no matter how [Formula: see text] rotates. Correspondingly, there are only two values of phase shift when the angle varies from 0 to 360[Formula: see text]. These two phase shifts only depend on [Formula: see text] mapping on [Formula: see text], i.e., sign of dot product of [Formula: see text] and [Formula: see text] [Sgn([Formula: see text])], implying that [Formula: see text]cos[Formula: see text] produces charge through the magnetoelectric effect. Then, a simple device was proposed to detect the magnitude and direction of ac magnetic field.

Na1-xKxNbO3 (x=0.2~0.8) Lead-Free Piezoelectric Ceramics Prepared by Spark Plasma Sintering

2007 ◽  
Vol 336-338 ◽  
pp. 224-227
Author(s):  
Ke Wang ◽  
Bo Ping Zhang ◽  
Jing Feng Li ◽  
Hong Jin Liu
Keyword(s):  
Spark Plasma Sintering ◽  
Solid Solutions ◽  
Electromechanical Coupling ◽  
Composition Range ◽  
Lead Free ◽  
Electromechanical Coupling Coefficient ◽  
Maximum Value ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Planar Mode

Highly dense Na1-xKxNbO3 (x=0.2~0.8) ceramics were successfully prepared using spark plasma sintering (SPS) at temperature as low as 920°C. Solid solutions were formed during the composition range investigated. The piezoelectric constant and planar mode electromechanical coupling coefficient are significantly dependent on the Na/K ratio, with the maximum value of 148 pC/N and 38.9% at the composition Na0.5K0.5NbO3.

scholarly journals Compositional dependence of hyperfine interactions and magnetoelectric coupling in (BiFeO3)x-(BaTiO3)1–x solid solutions

Nukleonika ◽  
2017 ◽  
Vol 62 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Karol Kowal ◽  
Piotr Guzdek ◽  
Maciej Kowalczyk ◽  
Elżbieta Jartych
Keyword(s):  
Magnetic Field ◽  
Solid Solutions ◽  
Hyperfine Interactions ◽  
Hyperfine Magnetic Field ◽  
Magnetoelectric Coupling ◽  
Lower Probability ◽  
Compositional Dependence ◽  
Solid State Sintering ◽  
Time Periods ◽  
Sintering Method

Abstract In this work the compositional dependence of hyperfine interactions and magnetoelectric coupling in (BiFeO3)x-(BaTiO3)1-x solid solutions where x = 0.5-0.9 fabricated from commercial BaTiO3 in terms of the solid-state sintering method at various temperatures and over different time periods is described. In general, as the content of BaTiO3 increases, a decrease in the hyperfine magnetic field (Bhf) at 57Fe nuclei was observed. However, for samples exhibiting lower homogeneity in which the ions of Bi3+ and Fe3+ are replaced by Ba2+ and Ti4+ with lower probability, higher values of Bhf are obtained. For the sample where x = 0.6 that exhibits the coexistence of rhombohedral, regular and tetragonal phases, the highest value of the αME coefficient (3.57 mV/A) was observed, which is more than three times higher when compared to the hitherto published results.

Large Longitudinal Magnetoelectric Effect in Clamping Structure of TbDyFe Flake, Pb(Zr,Ti)O3 Ring

2013 ◽  
Vol 321-324 ◽  
pp. 273-277
Author(s):  
Jing Liu ◽  
Xiang Yang Li ◽  
Xiao Peng Ye
Keyword(s):  
Magnetoelectric Effect ◽  
Piezoelectric Effect ◽  
Adhesive Layer ◽  
Layered Composites ◽  
Induced Voltage ◽  
Bias Magnetic Field ◽  
Ceramic Ring ◽  
Maximum Value ◽  
Dc Bias ◽  
Better Than

Longitudinal magnetoelectric (ME) effect has been studied in a clamping structure of a magnetostrictive TbDyFe (Terfenol-D), a piezoelectric Pb(Zr,Ti)O3(PZT) ceramic ring. The ME coupling originates from the magnetic-mechanical-electric transform of the magnetostrictive effect in Terfenol-D and the piezoelectric effect in PZT by endpoint bonding, without adhesive layer. In such a clamping structure, Large induced voltage was measured without amplifier, Large longitudinal ME coefficient of 0.12V cm-1Oe-1was obtained at f =1 kHz, which is about 3 times larger than transverse ME coefficient of conventional layered Terfenol-D/PZT composites under the same measuring conditions. The ME coefficient reaches a maximum value at the dc bias magnetic field (Hdc) =280 Oe, which is lower than Hdc =350 Oe in conventional layered composites. The results show that large ME coupling can be achieved without adhesive layer, and longitudinal ME effect can be better than transverse ME effect.

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