Results 41 to 50 of about 166,055 (125)
Coercivity and Exchange Bias in Ti-Doped Maghemite Nanoparticles
Magnetochemistry, 2022 Ti-doped maghemite nanoparticles of average crystallite size 12.9 nm were synthesized using the sol–gel method. The XRD profile mainly showed the presence of maghemite phase with very small phases of TiO2 (rutile and anatase).
Venkatesha Narayanaswamy +6 more
doaj +1 more source
Frontiers in Microbiology, 2014 We were able to demonstrate that hydroxyectoine, in contrast to ectoine, is a good glass-forming compound. Fourier transform infrared (FTIR) and spin label electron spin resonance (ESR) studies of dry ectoine and hydroxyectoine have shown that the ...
Erwin Arno Galinski +4 more
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Monte Carlo Studies of the Ordering of the Three-Dimensional Isotropic Heisenberg Spin Glass in Magnetic Fields [PDF]
J. Phys. Soc. Jpn. 71, 127 (2002), 2001 Spin and chirality orderings of the three-dimensional Heisenberg spin glass under magnetic fields are studied by large-scale equilibrium Monte Carlo simulations. It is found that the chiral-glass transition and the chiral-glass ordered state, which are essentially of the same character as their zero-field counterparts, occur under magnetic fields.
arxiv +1 more source
Two dimensional Ising spin glasses with non-zero ordering temperatures [PDF]
, 1996 We demonstrate numerically that for Ising spins on square lattices with ferromagnetic second neighbour interactions and random near neighbour interactions, two dimensional Ising spin glass order with a non-zero freezing temperature can occur. We compare some of the physical properties of these spin glasses with those of standard spin glasses in higher ...
arxiv +1 more source
Absence of an equilibrium ferromagnetic spin glass phase in three dimensions [PDF]
Phys. Rev. Lett. 89, 267202 (2002), 2002 Using ground state computations, we study the transition from a spin glass to a ferromagnet in 3-d spin glasses when changing the mean value of the spin-spin interaction. We find good evidence for replica symmetry breaking up till the critical value where ferromagnetic ordering sets in, and no ferromagnetic spin glass phase.
arxiv +1 more source
Electronic 1/f noise as a probe of dimensional effects on spin-glass dynamics
Frontiers in PhysicsOver the past decade, spin-glass simulations have improved to the point that they now access time- and length-scales comparable to experiments at the mesoscale.
David C. Harrison
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Chimica Techno Acta, 2023 A new method for assessing the quality of fibre coating based on a combination of fluorescence microscopy and electron paramagnetic resonance is presented in this work.
Rita S. Alqubelat +3 more
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Thermodynamics and Universality for Mean Field Quantum Spin Glasses [PDF]
, 2006 We study aspects of the thermodynamics of quantum versions of spin glasses. By means of the Lie-Trotter formula for exponential sums of operators, we adapt methods used to analyze classical spin glass models to answer analogous questions about quantum models.
arxiv +1 more source
Monte Carlo study of the ordering of the weakly anisotropic Heisenberg spin glass in magnetic fields [PDF]
Phys. Rev. B70, 144412 (2004), 2004 The ordering of the three-dimensional Heisenberg spin glass with the weak random anisotropy in magnetic fields is studied by extensive equilibrium Monte Carlo simulations. Both the spin and the chirality are monitored. We find strong numerical evidence that a replica symmetry breaking transition occurs in the chiral sector, which accompanies the ...
arxiv +1 more source
AIP AdvancesSingle-crystalline Zn1−xMnxTe is a three-dimensional (3D) monochalcogenide system that exhibits a prominent spin-glass transition at low-temperatures. This system is based on the host ZnTe semiconductor where Mn goes into the lattice substitutionally at ...
T. M. Pekarek +2 more
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