Topic
Magnetocapacitance
About: Magnetocapacitance is a research topic. Over the lifetime, 497 publications have been published within this topic receiving 23846 citations.
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TL;DR: In this article, a charge-order driven magnetic ferroelectricity was shown to occur in several rare earth manganates of the general formula, Ln1−x 1−x A−x 3 (Ln = rare earth, A = alkaline earth).
Abstract: Charge-order driven magnetic ferroelectricity is shown to occur in several rare earth manganates of the general formula, Ln1−x
A
x
MnO3 (Ln = rare earth, A = alkaline earth). Charge-ordered manganates exhibit dielectric constant anomalies around the charge-ordering or the antiferromagnetic transition temperature. Magnetic fields have a marked effect on the dielectric properties of these compounds, indicating the presence of coupling between the magnetic and electrical order parameters. Magneto-dielectric properties are retained in small particles of the manganates. The observation of magneto-ferroelectricity in these manganates is in accordance with theoretical predictions.
8 citations
TL;DR: In this paper, a new Bi 0.5 Pb 0. 5CrO 3 perovskite phase was synthesized by means of a high pressure reaction at 70kbar and 1000°C.
8 citations
TL;DR: In this article, the effects of varying the Nd and La doping concentration on the crystalline structures, magnetic properties and temperature of antiferromagnetic phase transition T N of the Bi 1-x A x FeO 3 compounds have been investigated.
8 citations
TL;DR: In this article, the spin-dependent contributions to sound velocity, dielectric permeability, and piezoelectric response in the antiferromagnetic state were studied, and a phenomenological interpretation of observed effects was given.
Abstract: The main components of the tensor of the moduli of elasticity and the piezomodulus have been measured in monocrystals of the ferroborate HoFe3(BO3)4. The spin-dependent contributions to sound velocity, dielectric permeability, and piezoelectric response in the antiferromagnetic state were studied. The parameters of magnetoelectric and magnetoelastic interactions in an easy-plane magnetic-ordering phase have been defined. A phenomenological interpretation of observed effects is given.The main components of the tensor of the moduli of elasticity and the piezomodulus have been measured in monocrystals of the ferroborate HoFe3(BO3)4. The spin-dependent contributions to sound velocity, dielectric permeability, and piezoelectric response in the antiferromagnetic state were studied. The parameters of magnetoelectric and magnetoelastic interactions in an easy-plane magnetic-ordering phase have been defined. A phenomenological interpretation of observed effects is given.
7 citations
TL;DR: In this article, the field-induced changes in ζ(N, H) are interpreted in terms of field induced changes in the critical density Nc and the correlation-localization-length exponent v(H).
Abstract: Various experiments at low-temperatures on Si:As in the critical regime (0·8 < N/N c< 1·2) near the metal-insulator transition have yielded information on magnetic-field-induced changes in the correlation and localization lengths. The measurements include magnetoresistance of metallic samples, magnetocapacitance, a.c. magnetoconductance, and the field dependence of Mott variable-range-hopping conduction for insulating samples. The field-induced changes in ζ(N, H) are interpreted in terms of field-induced changes in the critical density Nc and the correlation-localization-length exponent v(H). The implications of the results for the Shapiro phase diagram are discussed.
7 citations