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A new methodology for micromagnetic simulations of magnetic nanocomposites is presented. The methodology is especially suitable for simulations of two-phase composites consisting of magnetically hard inclusions in a soft magnetic matrix…

Mesoscale and Nanoscale Physics · Physics 2011-09-20 Sergey Erokhin , Dmitry Berkov , Nataliya Gorn , Andreas Michels

The authors apply first-principles calculations to investigate the interplay between structural, electronic, and magnetic properties of nanostructures composed of narrow nanotubes filled with metallic nanowires. The focus is on the…

Mesoscale and Nanoscale Physics · Physics 2010-09-06 Eduardo M. Diniz , Ricardo W. Nunes , Hélio Chacham , Mário S. C. Mazzoni

Magnetization, magnetic torque, neutron diffraction and NMR experiments are used to map out the $H$$-$$T$ phase diagram of the prototypical quasi-two-dimensional ferro-antiferromagnet Pb$_2$VO(PO$_4$)$_2$ in magnetic fields up to 27 T. When…

Strongly Correlated Electrons · Physics 2020-09-16 F. Landolt , S. Bettler , Z. Yan , S. Gvasaliya , A. Zheludev , S. Mishra , I. Sheikin , S. Krämer , M. Horvatić , A. Gazizulina , O. Prokhnenko

Zinc alloys have emerged as promising candidates for biodegradable materials due to their remarkable biocompatibility and favorable mechanical characteristics. The incorporation of alloying elements plays an essential role in advancing the…

Co10Ge3O16 crystallizes in an intergrowth structure featuring alternating layers of spinel and rock salt. Variable-temperature powder synchrotron X-ray and neutron diffraction, magnetometry, and heat capacity experiments reveal a…

Materials Science · Physics 2013-07-12 Phillip T. Barton , Ram Seshadri , Anna Llobet , Matthew R. Suchomel

In this work we report a study of the magnetic behavior of ferrimagnetic oxide CoFe2O4 treated by mechanical milling with different grinding balls. The cobalt ferrite nanoparticles were prepared using a simple hydrothermal method and…

Materials Science · Physics 2013-01-10 A. S. Ponce , E. F. Chagas , R. J. Prado , C. H. M. Fernandes , A. J. Terezo , E. Baggio-Saitovitch

We report density functional studies of the Fe$_{1-x}$Cu$_x$Se alloy done using supercell and coherent potential approximation methods. Magnetic behavior was investigated using the disordered local moment approach. We find that Cu occurs in…

Superconductivity · Physics 2013-08-08 S. Chadov , D. Schärf , G. H. Fecher , C. Felser , L. Zhang , D. J. Singh

Neutron diffraction is used to re-investigate the magnetic phase diagram of the noncentrosymmetric tetragonal antiferromagnet Ba2CuGe2O7. A novel incommensurate double-k magnetic phase is detected near the commensurate-incommensurate phase…

Strongly Correlated Electrons · Physics 2015-05-30 S. Mühlbauer , S. N. Gvasaliya , E. Pomjakushina , A. Zheludev

The nanocrystalline-amorphous textures are commonly observed in the coatings synthesized by energetic deposition.This work reports a theoretical study towards binary Cu-C phase separation.By performing a MD simulation using the LAMMPS…

Materials Science · Physics 2023-07-18 Jiajian Guan , Qin Jiang , Yue He , Xu Zhang , Bin Liao , Wei Gao , Lizhao Qin

We study the ground state phase diagram of a frustrated spin tube in a strong external magnetic field. This model can be viewed as two coupled zigzag spin chains, or as a two-leg spin ladder with frustrating next-nearest-neighbor couplings…

Strongly Correlated Electrons · Physics 2015-06-15 I. T. Shyiko , I. P. McCulloch , J. V. Gumenjuk-Sichevska , A. K. Kolezhuk

Magnetic materials for specific applications require an accurate control and complete comprehension of their magnetic properties. In particular, nanoparticles embedded in a polycrystalline matrix emerge as good candidates for applications…

We present extensive large-scale dynamical simulations of phase-separated states in the double exchange model. These inhomogeneous electronic states that play a crucial role in the colossal magnetoresistance phenomenon are composed of…

Strongly Correlated Electrons · Physics 2021-03-31 Jing Luo , Gia-Wei Chern

Metastable nanostructures are kinetically trapped in local energy minima featuring intriguing surface and material properties. To unleash their potential, there is a need for non-equilibrium processes capable of stabilizing a large range of…

The combination of spin transitions and magnetic ordering provides an interesting structure of phase transitions in Prussian blue analogues (PBAs). To understand the structure of stable and metastable states of Co-Fe PBA, it is necessary to…

Materials Science · Physics 2009-11-11 Y. Konishi , H. Tokoro , M. Nishino , S. Miyashita

The magnetic phases of electron-doped infinite-layer Sr$_{1-x}$La$_x$CuO$_2$ are elucidated by first-principles density functional calculations. The antiferromagnetic parent state, metallic transition, as well as lattice evolution with…

Superconductivity · Physics 2024-12-10 Alpin N. Tatan , Jun Haruyama , Osamu Sugino

Nanofabrication is an integral part of realization of advanced functional devices ranging from optical displays to memory devices. Focused ion beam (FIB) milling is one of the widely used nanofabrication methods. Conventionally, FIB milling…

Materials Science · Physics 2023-10-19 Vivek C. Peddiraju , Pravallika Bandaru , Shourya Dutta-Gupta , Subhradeep Chatterjee

DyRu2Si2 is a frustrated magnet to exhibit multiple magnetic phase transition in zero and finite magnetic fields. We investigated and characterized the phase transition between the partially-ordered antiferromagnetic phases at zero field by…

Strongly Correlated Electrons · Physics 2023-08-23 Subaru Yoshimoto , Yoshikazu Tabata , Takeshi Waki , Hiroyuki Nakamura

The structural and magnetic properties of sputter-deposited Fe$_{100-x}$Ru$_x$ films were studied for $x \leq 50$. The crystal structure of Fe$_{100-x}$Ru$_x$ is shown to be predominantly body-centered cubic for $x<13$ and to undergo a…

In the present work, magnetic properties of single crystal (Fe$_{1-x}$Mn$_x$)$_2$Mo$_3$O$_8$ ($0<x<1$) have been studied by performing extensive measurements. A detailed magnetic phase diagram is built up, in which antiferromagnetic state…

Materials Science · Physics 2023-09-19 Yuting Chang , Lei Gao , Yunlong Xie , Bin You , Yong Liu , Rui Xiong , Junfeng Wang , Chengliang Lu , JunMing Liu

LuFe$_4$Ge$_2$ crystallizes in the ZrFe$_4$Si$_2$-type structure, hosting chains of Fe-tetrahedra giving rise to geometric frustration and low-dimensionality. The compound orders antiferromagnetically at around 36 K accompanied by a…