中文
相关论文

相关论文: Unexpected magnetism explained in Cu/Cu2O-rGO nano…

200 篇论文

We investigate the magnetic properties of a range of low-dimensional ferromagnets using a combination of first-principles calculations and atomistic spin dynamics simulations. This approach allows us to evaluate the ground state and finite…

材料科学 · 物理学 2016-11-26 Lars Bergqvist , Andrea Taroni , Anders Bergman , Corina Etz , Olle Eriksson

Single-crystalline UAu$_2$Si$_2$ has been grown by a floating-zone melting method, and its magnetic, thermal and transport properties have been investigated through measurements of magnetization, specific heat and electrical resistivity to…

The comprehensive search for multifunctional materials has resulted in the discovery of semiconductors and oxides showing ferromagnetic features persisting to room temperature. In this tutorial review the methods of synthesis of these…

材料科学 · 物理学 2011-01-12 Alberta Bonanni , Tomasz Dietl

Room temperature ferromagnetism was observed in In$_2$O$_3 thin films doped with 5 at.% vanadium, prepared by pulsed laser deposition at substrate temperatures ranging from 300 to 600 $\,^{\circ}{\rm C}$. X-ray absorption fine structure…

材料科学 · 物理学 2015-06-17 Qi Feng , Harry J Blythe , A Mark Fox , Xiu-Fang Qin , Xiao-Hong Xu , Steve M Heald , Gillian A Gehring

Contrary to prior calculations, the Ni-rich ordered structures of the Cr-Ni alloy system are found to be antiferromagnetic under semi-local density-functional theory. The optimization of local magnetic moments significantly increases the…

材料科学 · 物理学 2023-08-23 Flynn Walsh , Robert O. Ritchie , Mark Asta

The pseudo-one dimensional brannerite type compound CoV2O6 has been studied by magnetisation and heat capacity measurements in the temperature range 1.8 < T < 300 K and in applied fields of up to 9 T. Our measurements show an unusual…

强关联电子 · 物理学 2008-04-21 Simon A. J. Kimber , Dimitri N. Argyriou , J. Paul Attfield

SrCuTe$_2$O$_6$ consists of a 3-dimensional arrangement of spin-$\frac{1}{2}$ Cu$^{2+}$ ions. The 1st, 2nd and 3rd neighbor interactions respectively couple Cu$^{2+}$ moments into a network of isolated triangles, a highly frustrated…

强关联电子 · 物理学 2021-01-04 S. Chillal , A. T. M. N Islam , H. Luetkens , E. Canévet , Y. Skourski , D. Khalyavin , B. Lake

The magnetic properties of GdBaMn_{2}O_{5.0}, which exhibits charge ordering, are studied from 2 to 400 K using single crystals. In a small magnetic field applied along the easy axis, the magnetization M shows a temperature-induced reversal…

材料科学 · 物理学 2009-11-13 A. A. Taskin , Yoichi Ando

Altermagnetism has attracted considerable attention for its remarkable combination of spin-polarized band structures and zero net magnetization, making it a promising candidate for spintronics applications. We demonstrate that this magnetic…

材料科学 · 物理学 2025-06-03 Zhuang Qian , Yudi Yang , Shi Liu , Congjun Wu

We present a theory of magnetization reversal due to thermal fluctuations in thin submicron-scale rings composed of soft magnetic materials. The magnetization in such geometries is more stable against reversal than that in thin needles and…

介观与纳米尺度物理 · 物理学 2009-11-10 Kirsten Martens , D. L. Stein , A. D. Kent

Multi-orbital physics in quasi-two-dimensional electron gases (q2DEGs) triggers unique phenomena not observed in bulk materials, such as unconventional superconductivity and magnetism. Here, we investigate the mechanism of orbital selective…

The possibility to induce long range ferromagnetic order by doping oxides with transition metal ions has become a very exciting challenge in the last decade. Theoretically, it has been claimed that Mn doped ZrO$_2$ could be a very promising…

材料科学 · 物理学 2014-01-03 Akash Chakraborty , Georges Bouzerar

Proximity effects allow for the adjustment of magnetic properties in a physically elegant way. If two thin ferromagnetic (FM) films are brought into contact, electronic coupling alters their magnetic exchange interaction at their interface.…

We carried out detailed studies of the magnetic structure, magnetoelastic coupling, and thermal properties of EuCrO$_3$ nano-powders from room temperature to liquid helium temperature. Our neutron powder diffraction and X-ray powder…

强关联电子 · 物理学 2016-04-07 M. Taheri , F. S. Razavi , Z. Yamani , R. Flacau , P. G. Reuvekamp , A. Schulz , R. K. Kremer

The periodic response of magnetoresistance to an externally tunable parameter, such as magnetic field or chemical composition, in the bulk or an artificially designed material has been exploited for technological applications as well as to…

材料科学 · 物理学 2012-09-04 S. Dickert , D. K. Singh , R. Thantirige , M. T. Tuominen

The coexistence of superconductivity and ferromagnetism is a long-standing issue in superconductivity due to the antagonistic nature of these two ordered states. Experimentally identifying and characterizing novel heterointerface…

The structural and magnetic anomaly of the layered compound SrFeO$_{2}$ were examined by first principles density functional calculations and Monte Carlo simulations. The down-spin Fe 3$d$ electron occupies the $d_{z^2}$ level rather than…

材料科学 · 物理学 2008-04-25 H. J. Xiang , Su-Huai Wei , M. -H. Whangbo

We report room temperature ferromagnetism in boron-doped ZnO both experimentally and theoretically. The single phase Zn1-xBxO films deposited under high oxygen pressure by pulsed-laser deposition show ferromagnetic behavior at room…

材料科学 · 物理学 2015-05-18 X. G. Xu , H. L. Yang , Y. Wu , D. L. Zhang , S. Z. Wu , J. Miao , Y. Jiang

Creating a heterostructure by combining two magnetically and structurally distinct ruthenium oxides is a crucial approach for investigating their emergent magnetic states and interactions. Previously, research has predominantly concentrated…

Magneto-optic studies of ZnO doped with transition metals Co, Mn, V and Ti indicate a significant magnetic circular dichroism (MCD) at the ZnO band edge at room temperature, together with an associated dispersive Faraday rotation. Similar…

强关联电子 · 物理学 2009-11-11 JR Neal , AJ Behan , RM Ibrahim , H J Blythe , M Ziese , AM Fox , GA Gehring