Journal ArticleDOI
Enhanced magneto-electric property of GaFeO3 in Ga(1−x)ZnxFeO3 (x=0, 0.05, 0.10)
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TLDR
In this paper, gallium orthoferrite (GFO) and Zn doped GaFeO3 (Ga0.95Zn0.10FeO 3, GZFO2) are prepared by sol-gel method.Abstract:
Nanocrystalline samples of gallium orthoferrite (GaFeO3, GFO) and Zn doped GaFeO3 (Ga0.95Zn0.05FeO3, GZFO1 and Ga0.90Zn0.10FeO3, GZFO2) are prepared by sol–gel method. Crystallographic phase of each sample has been confirmed by analyzing the X-ray diffractogram using FULLPROF program and all the samples are grown in the distorted perovskite type structure. Magnetic measurements of all the samples are carried out in the temperature range of 300–4 K. Dielectric and ferroelectric measurements of the samples are also carried out at room temperature. Interestingly, the magnetization and electric polarization of the doped samples are enhanced compared to those of the pristine sample of GFO. The dielectric constant measured in presence and absence of a magnetic field confirmed that all the samples (GFO, GZFO1, and GZFO2) are type-II multiferroics and the magnetocapacitance is enhanced in the doped samples. The simultaneous enhancement of magnetization, polarization and magneto-capacitance co-efficient of the doped samples compared to that of GFO will be quite interesting for applications in electronic and memory devices.read more
Citations
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Enhanced magnetic property and phase transition in Ho3+ doped LaFeO3
TL;DR: In this paper, a solid state reaction method is used to enhance the magnetic property of LaFeO 3 (LFO), a well known antiferromagnetic multiferroic, Ho 3+ doping [La 0.9 Ho 0.1 FeO3 (LHFO)] is considered using solid state reactivity method.
Journal ArticleDOI
Effect of Annealing Atmosphere on Leakage and Dielectric Characteristics of Multiferroic Gallium Ferrite
Vijay A. Singh,A.S. Daryapurkar,Shailendra Rajput,Somdutta Mukherjee,Ashish Garg,Rajeev Gupta +5 more
TL;DR: In this paper, the conduction mechanism in gallium ferrite ceramic samples vis-a-vis processing conditions was investigated and it was shown that oxygen annealed samples exhibit minimum electrical leakage as compared to air or nitrogen annesaled samples suggesting the role of oxygen vacancies on electrical conduction.
Journal ArticleDOI
Enhancement of multiferroic and magnetocapacitive properties in nanocrystalline Mg-doped GaFeO3
T.C. Han,Y.D. Chung,Y.C. Lee +2 more
TL;DR: In this article, the effect of Mg doping on structural, magnetic, electric and magnetocapacitive properties of nanocrystalline Ga1−xMgxFeO3 (GMFO, 0.≤ ǫ x ǔ ≥ 0.10) prepared by a modified Pechini method was studied.
Journal ArticleDOI
Significant reduction in the leakage current of Cr-doped GaFeO 3 synthesized by sol–gel method
TL;DR: In this article, the authors synthesize the GaFe1−x −x Cr 3 O3 polycrystalline samples using sol-gel technique and show the presence of orthorhombic structure with no evidence of any secondary phase.
Journal ArticleDOI
XRD, HRTEM, magnetic, dielectric and enhanced microwave reflection loss of GaFeO3 nanoparticles encapsulated in multi-walled carbon nanotubes
TL;DR: In this paper, multiferroic nanoparticles of GaFeO3 are incorporated in multi-walled carbon nanotubes (MW-CNTs) and the formations of the desired crystallographic phases of both the bare and encapsulated samples are confirmed by X-ray diffractograms.
References
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On the Dispersion of Resistivity and Dielectric Constant of Some Semiconductors at Audiofrequencies
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