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Effective modulation of magnetic permeability plays a vital role in the development of high-performance inductors. Here, phase-field simulations of hard/soft ferrite composites (BaM/NiZn) clarify how exchange coupling and microstructure…

Materials Science · Physics 2025-11-26 Xinyu Xu , Wenqin Yue , Yueli Yu , Yongke Yan , Liwei D. Geng

The properties of two molecular-based magnetic helices, composed of 3$d$ metal Co and Mn ions bridged by Nitronyl Nitroxide radicals, are investigated by density functional calculations. Their peculiar and distinctive magnetic behavior is…

Materials Science · Physics 2015-05-20 Marco Scarrozza , Alessandro Vindigni , Paolo Barone , Roberta Sessoli , Silvia Picozzi

We theoretically study magnetoelectric effects in a heterostructure of a generic band insulator and a ferromagnet. In contrast to the kinetic magnetoelectric effect in metals, referred to as the Edelstein effect or the inverse spin galvanic…

Materials Science · Physics 2019-05-08 Ken N. Okada , Yasuyuki Kato , Yukitoshi Motome

Magnetoelectric (ME) effect, the phenomenon of inducing magnetization by application of an electric field or vice versa, holds great promise for magnetic sensing and switching applications. Studies of the ME effect have so far focused on…

Mesoscale and Nanoscale Physics · Physics 2021-10-19 Jieun Lee , Zefang Wang , Hongchao Xie , Kin Fai Mak , Jie Shan

In this paper we show that magnetic-dipolar-mode (MDM) oscillations of a quasi-2D ferrite disk are characterized by unique symmetry features with topological phases resulting in appearance of the magnetoelectric (ME) properties. The entire…

Materials Science · Physics 2008-05-06 M. Sigalov , E. O. Kamenetskii , R. Shavit

The utilization of ferromagnetic (FM) materials in thermoelectric devices allows one to have a simpler structure and/or independent control of electric and thermal conductivities, which may further remove obstacles for this technology to be…

A new technique for estimation of magnetic interaction effects of initial magnetization curves has been proposed. It deals with remanence, and initial irreversible magnetization, curves. The method is applied for single-phase…

Materials Science · Physics 2013-07-19 G. Goev , V. Masheva

We investigate a large variation in a diagonal component of the linear magnetoelectric (ME) susceptibility in a polar ferrimagnet Mn2Mo3O8 while changing the magnetic-ion site from orbital-quenched Mn2+ to Fe2+ with strong uniaxial…

Strongly Correlated Electrons · Physics 2017-01-30 T. Kurumaji , S. Ishiwata , Y. Tokura

Magnetoelectric (ME) multiferroics enable efficient interconversion of electrical and magnetic signals, offering pathways toward substantial reduction of power consumption in next-generation computing and information technologies. However,…

We investigate the electronic and magnetic properties of (Ga,Mn)N nanocrystals using the density functional theory. We study both wurtzite and zinc-blende structures doped with one or two substitutional Mn impurities. For a single Mn dopant…

Mesoscale and Nanoscale Physics · Physics 2015-03-13 C. Echeverría-Arrondo , J. Pérez-Conde , A. Ayuela

We fabricated Pb(Zr0.52Ti0.48)O3-NiFe2O4 composite films consisting of randomly dispersed NiFe2O4 nanoparticles in the Pb(Zr0.52Ti0.48)O3 matrix. The structural analysis revealed that the crystal axes of the NiFe2O4 nanoparticles are…

The magnetic lattice of mixed-valence Mn ions in La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ is selectively diluted by partial substitution of Al or Ti for Mn. The ferromagnetic transition temperature $T_\mathrm{c}$ and the saturation magnetization…

Materials Science · Physics 2015-05-13 D. N. H. Nam , N. V. Dai , L. V. Hong , N. X. Phuc , L. V. Bau , P. Nordblad , R. S. Newrock

Ferromagnetic resonance (FMR) in exchange-coupled ferromagnet-antiferromagnet (FM/AFM) bilayers commonly shows a moderate increase in the resonance frequency owing to the induced unidirectional anisotropy. Here we report a large FMR…

In the present study, we investigated magnetodielectric, magnetoelectric (ME), and angular-dependent polarization in single-crystal Fe4Nb2O9. The magnetodielectric effects in epsilon(x) (x//[100]), epsilon(y) (y//[120]), and epsilon(z)…

Materials Science · Physics 2021-09-29 Jing Zhang , Na Su , Xinrun Mi , Maocai Pi , Haidong Zhou , Jinguang Cheng , Yisheng Chai

Composite multiferroics, heterostructures of ferromagnetic (FM) and ferroelectric (FE) materials, are characterized by a remarkable magnetoelectric effect at the interface. Previous work has supported the ferromagnetic structure with…

Mesoscale and Nanoscale Physics · Physics 2016-04-01 Zidong Wang , Malcolm J. Grimson

There is great interest in hybrid organic-inorganic materials such as metal-organic frameworks (MOFs). The compounds [C(NH$_{2}$)$_{3}$]M(HCOO)$_{3}$, where M=Cu$^{2+}$ or Cr$^{2+}$ are Jahn-Teller (JT) active ions, are MOF with perovskite…

Materials Science · Physics 2014-03-27 Alessandro Stroppa , Paolo Barone , Prashant Jain , Jean Manuel Perez-Mato , Silvia Picozzi

CuCrS2, a Heisenberg antiferromagnet with layered edge sharing triangular lattice, exhibits a spiral magnetic order. Dielectric (E) and polarization studies show magnetoelectric (ME) coupling at Neel temperature (T_N=38 K) where…

Materials Science · Physics 2015-06-16 A. Karmakar , K. Dey , S. Chatterjee , S. Majumdar , S. Giri

Density functional calculations are used to study magnetic and electronic properties of the spinel ferrites, ZnFe$_2$O$_4$ and MnFe$_2$O$_4$. Correct magnetic orderings are obtained. ZnFe$_2$O$_4$ is predicted to be a small gap insulator in…

Condensed Matter · Physics 2009-11-07 D. J. Singh , M. Gupta , R. Gupta

Polycrystalline bulk Mn:ZnO ceramics with Mn nominal concentrations of 6, 11, 17 and 22 at.% were prepared trough solid-state reaction method and subjected to a heat treatment in reducing atmosphere (Ar (95%) and H2 (5%)). The samples were…

We use the state-of-the-arts density-functional-theory method to study various magnetic orders and their effects on the electronic structures of the FeSe. Our calculated results show that, for the spins of the single Fe layer, the striped…

Materials Science · Physics 2009-05-21 Yong-Feng Li , Li-Fang Zhu , San-Dong Guo , Ye-Chuan Xu , Bang-Gui Liu
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