中文
相关论文

相关论文: Antiferromagnetic ground state in the MnGa$_4$ int…

200 篇论文

We report the discovery of a complete suppression of ferroelectricity in $MnWO_4$ by 10 % iron substitution and its restoration in external magnetic fields. The spontaneous polarization in $Mn_{0.9}Fe_{0.1}WO_4$ arises below 12 K in…

强关联电子 · 物理学 2008-03-08 R. P. Chaudhury , B. Lorenz , Y. Q. Wang , Y. Y. Sun , C. W. Chu

We investigate the structural conditions for metamagnetism in MnP and related materials using Density Functional Theory. A magnetic stability plot is constructed taking into account the two shortest Mn-Mn distances. We find that a…

材料科学 · 物理学 2010-06-23 Z. Gercsi , K. G. Sandeman

We report $^{153}$Eu and $^{69,71}$Ga NMR under a zero magnetic field on the antiferromagnetic state of EuGa$_{4}$ with $T_{\rm{N}}\approx 16$ K. We have successfully observed a $^{153}$Eu zero-field NMR signal with well-resolved nuclear…

强关联电子 · 物理学 2013-09-06 Mamoru Yogi , Saori Nakamura , Nonoka Higa , Haruo Niki , Yusuke Hirose , Yoshichika Onuki , Hisatomo Harima

We examine electronic states of antiferromagnetic phase in iron pnictides by mean-field calculations of the optical conductivity. We find that a five-band model exhibiting a small magnetic moment, inconsistent with the first-principles…

超导电性 · 物理学 2009-12-14 E. Kaneshita , T. Morinari , T. Tohyama

Magnetic susceptibility results for single crystals of the new cubic compounds UT$_2$Al$_{20}$ (T=Mn, V, and Mo) are reported. Magnetization, specific heat, resistivity, and neutron diffraction results for a single crystal and neutron…

Low temperature studies of the behavior of the sound velocity and attenuation of acoustic modes have been performed on a single crystal NdFe_3(BO_3)_4. Transitions of the magnetic subsystem to the antiferromagnetically ordered state at T_N…

强关联电子 · 物理学 2015-05-27 G. A. Zvyagina , K. R. Zhekov , I. V. Bilych , A. A. Zvyagin , I. A. Gudim , V. L. Temerov

Co4Ta2O9 exhibits a three-dimensional magnetic lattice based on the buckled honeycomb motif. It shows unusual magnetoelectric effects, including the sign change and non-linearity. These effects cannot be understood without the detailed…

We report our results on two new ternary intermetallic compounds Pr$_{2}$Pd$_{3}$Ge$_{5}$ and Pr$_{2}$Rh$_{3}$Ge$_{5}$ based on magnetic susceptibility, magnetization, specific heat, resistivity and magnetoresistance data. These compounds…

强关联电子 · 物理学 2009-11-13 V. K. Anand , Z. Hossain , C. Geibel

Neutron powder diffraction studies of the crystal and magnetic structures of the magnetocaloric compound Mn1.1Fe0.9(P0.8Ge0.2) have been carried out as a function of temperature, applied magnetic field, and pressure. The data reveal that…

材料科学 · 物理学 2009-11-30 D. M. Liu , Q. Huang , M. Yue , J. W. Lynn , L. J. Liu , Y. Chen , Z. H. Wu , J. X. Zhang

We have investigated the physical properties of a pyrochlore hafnate Nd2Hf2O7 using ac magnetic susceptibility \chi_ac(T), dc magnetic susceptibility \chi(T), isothermal magnetization M(H) and heat capacity C_p(T) measurements, and…

强关联电子 · 物理学 2015-12-09 V. K. Anand , A. K. Bera , J. Xu , T. Herrmannsdörfer , C. Ritter , B. Lake

Magnetization and specific heat measurements on a UIrSi3 single crystal reveal Ising-like antiferromagnetism below T$_N$ = 41.7 K with easy magnetization direction along the c-axis of tetragonal structure. The antiferromagentic ordering is…

Effect of carbon content on magnetostructural transformation in antiperovskites of the type Mn$_3$GaC$_x$ ($x$ = 0.8, 1.0 and 1.05) has been investigated. It is found that, increase in carbon content changes the ground state from…

材料科学 · 物理学 2015-06-19 E. T . Dias , K. R. Priolkar , A. K. Nigam

The antiferromagnet Mn$_5$Si$_3$ has recently attracted attention because a noncollinear spin arrangement has been shown to produce a topological anomalous Hall effect and an inverse magnetocaloric effect. Here we synthesize single crystals…

Using density functional theory, we study the magnetic stability of the Ga$_{1-x}$Mn$_x$N alloy system. We show that unlike Ga$_{1-x}$Mn$_x$As, which shows only ferromagnetic (FM) phase, Ga$_{1-x}$Mn$_x$N can be stable in either FM or…

材料科学 · 物理学 2015-06-25 Gustavo M. Dalpian , Su-Huai Wei

We study the magnetic properties of small Mn ring shaped clusters on a Pt(111) surface in the framework of density functional theory. We find that the Mn atoms possess large magnetic moments, of the order of 4uB/atom, and have dominating…

介观与纳米尺度物理 · 物理学 2015-05-20 M. S. Ribeiro , G. B. Corrêa , A. Bergman , L. Nordström , O. Eriksson , A. B. Klautau

The highly diluted antiferromagnet Mn(0.35)Zn(0.65)F2 has been investigated by neutron scattering for H>0. A low-temperature (T<11K), low-field (H<1T) pseudophase transition boundary separates a partially antiferromagnetically ordered phase…

无序系统与神经网络 · 物理学 2009-10-31 F. C. Montenegro , D. P. Belanger , Z. Slanic , J. A. Fernandez-Baca

Information technologies require entangling data stability with encryption for a next generation of secure data storage. Current magnetic memories, ranging from low-density stripes up to high-density hard drives, can ultimately be detected…

We report the multiferroic behaviour of MnWO$_4$, a magnetic oxide with monoclinic crystal structure and spiral long-range magnetic order. Based upon recent theoretical predictions MnWO$_4$ should exhibit ferroelectric polarization…

强关联电子 · 物理学 2007-05-23 O. Heyer , N. Hollmann , I. Klassen , S. Jodlauk , L. Bohaty , P. Becker , J. A. Mydosh , T. Lorenz , D. Khomskii

We present a joint experimental and theoretical characterization of the magnetic properties of coordination clusters with an antiferromagnetic core of four magnetic ions. Two different compounds are analyzed, with Co and Mn ions in the…

化学物理 · 物理学 2021-09-16 Simona Achilli , Claire Besson , Xu He , Pablo Ordejòn , Carola Meyer , Zeila Zanolli

The exploration of two-dimensional (2D) antiferromagnetic (AFM) materials has shown great promise and interest in tuning the magnetic and electronic properties as well as studying magneto-optical effects. The current work investigates the…