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The dynamical properties of free and bound domain-wall excitations in Ising-chain materials have recently become the focus of intense research interest. New materials and spectrometers have made it possible to control the environment of…

We have systematically investigated the influence of gradual replacement of Ca by Gd on the magnetic and complex dielectric properties of the well-known geometrically frustrated spin-chain system, Ca3Co2O6 (T_N= 24 K with additional…

强关联电子 · 物理学 2015-06-17 Tathamay Basu , Kiran Singh , E. V. Sampathkumaran

A variety of experimental observations in monolayer transition metal dichalcogenide superconductors with Ising spin-orbit coupling suggest the presence of an unconventional superconducting pairing mechanism. Some of these experiments…

超导电性 · 物理学 2026-02-05 Subhojit Roy , Andreas Kreisel , Brian M. Andersen , Shantanu Mukherjee

The manganocuprate compound Gd3Ba2Mn2Cu2O12 (Gd-3222) has been synthesized by conventional solid state reaction method and its magnetic behavior has been studied by dc and ac magnetization (M) and heat capacity (C) measurements as a…

Using electron spin resonance, lattice position and dynamic properties of Mn2+ ions were studied in 0.5 and 2 % manganese doped SrTiO3 ceramics prepared by conventional mixed oxide method. The measurements showed that Mn2+ ions substitute…

软凝聚态物质 · 物理学 2009-11-13 V. V. Laguta , I. V. Kondakova , I. P. Bykov , M. D. Glinchuk , P. M. Vilarinho , A. Tkach , L. Jastrabik

The temperature dependent ac and dc magnetization and heat capacity data of Ca$_3$CoIrO$_6$, a spin-chain compound crystallizing in a K$_4$CdCl$_6$-derived rhombohedral structure, show the features due to magnetic ordering of a…

强关联电子 · 物理学 2009-11-10 S. Rayaprol , Kausik Sengupta , E. V. Sampathkumaran

We report the results of ac and dc magnetic susceptibility (chi), heat-capacity (C), isothermal magnetization and isothermal remanent magnetization measurements on the compound, Sr3CuRhO6, crystallizing in a K4CdCl6-derived monoclinic…

强关联电子 · 物理学 2007-05-23 E. V. Sampathkumaran , Niharika Mohapatra , Sudhindra Rayaprol , Kartik K Iyer

We investigate magnetoelectric coupling and low-energy magnetic excitations in multiferroic $\alpha$-Cu$_2$V$_2$O$_7$ by detailed thermal expansion, magnetostriction, specific heat and magnetization measurements in magnetic fields up to…

强关联电子 · 物理学 2018-06-26 L. Wang , J. Werner , A. Ottmann , R. Weis , M. Abdel-Hafiez , J. Sannigrahi , S. Majumdar , C. Koo , R. Klingeler

We report that the major features in the temperature dependence of dc and ac magnetization of a well-known spin-chain compound, Ca3Co2O6, which has been known to exhibit two complex magnetic transitions due to geometrical frustration (one…

A symmetric spin-1/2 Ising-Heisenberg diamond chain with the Ising four-spin interaction is exactly solved by means of the generalized decoration-iteration mapping transformation. The ground state, the magnetization process and…

统计力学 · 物理学 2013-01-08 Lucia Galisova

We report a neutron diffraction and muon spin relaxation muSR study of static and dynamical magnetic properties of BaCo2V2O8, a quasi-one-dimensional spin-chain system. A proposed model for the antiferromagnetic structure includes: a…

We developed numerical calculations to simulate the magnetoelectric coupling in multiferroic compounds, using the Monte Carlo technique. Two simple models were used to simulate the compounds. In the first one, the magnetic ions are…

强关联电子 · 物理学 2011-05-04 Cesar J. Calderon Filho , Gaston E. Barberis

A classical-quantum chain composed of regularly alternating Ising and Heisenberg spins is rigorously solved by considering two distinct local anisotropy axes of the Ising spins. The ground-state phase diagram and magnetization curves are…

强关联电子 · 物理学 2018-06-13 J. Torrico , J. Strecka , M. Hagiwara , O. Rojas , S. M. de Souza , Y. Han , Z. Honda , M. L. Lyra

Inelastic neutron scattering study on the spin-chain compound Sr$_3$NiIrO$_6$ reveals gapped quasi-1D magnetic excitations. The observed one-magnon band between 29.5 and 39 meV consists of magnon modes of the Ni$^{2+}$ ions. The fitting of…

强关联电子 · 物理学 2016-06-01 S. Toth , W. Wu , D. T. Adroja , S. Rayaprol , E. V. Sampathkumaran

The recently discovered multiferroic material CdCr2S4 shows a coexistence of ferromagnetism and relaxor ferroelectricity together with a colossal magnetocapacitive effect. The complex dielectric permittivity of this compound and of the…

强关联电子 · 物理学 2009-11-11 J. Hemberger , P. Lunkenheimer , R. Fichtl , S. Weber , V. Tsurkan , A. Loidl

High-Curie-temperature ferromagnets are promising candidates for designing new spintronic devices. Here we have successfully synthesized a single-crystal sample of the itinerant ferromagnet Mn$ _{5}$Ge$_{3}$ used flux method and its…

Cr2Ge2Te6 has been of interest for decades, as it is one of only a few naturally forming ferromagnetic semiconductors. Recently, this material has been revisited due to its potential as a 2 dimensional semiconducting ferromagnet and a…

材料科学 · 物理学 2016-05-02 Yao Tian , Mason J. Gray , Huiwen Ji , R. J. Cava , Kenneth S. Burch

By using the arc-melting method, we successfully synthesized the compound Sc$_{0.5}$Zr$_{0.5}$Co with the space group of $Pm$-$3m$. Both the resistivity and magnetic susceptibility measurements reveal a phase transition at about 86 K. This…

材料科学 · 物理学 2020-07-06 Jin Si , Xinwei Fan , Enyu Wang , Xiyu Zhu , Qing Li , Hai-Hu Wen

The composition-driven structural transition from the R3c to Pbnm symmetry was observed. Highest dielectric constant was observed for Bi0.95Nd0.05Fe0.95Mn0.05O3. Conductivity can be explained by the small polaron hopping model. The…

材料科学 · 物理学 2015-12-10 Chandrakanta Panda , Pawan Kumar , A. K. Sinha , Archna Sagdeo , Manoranjan Kar

Manganites exhibit various types of electronic phenomena, and these electronic characteristics can be controlled by carrier doping. Herein, we report the dielectric and magnetic properties of electron-doped manganite…