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Near-Infrared (NIR) Organic Light-Emitting Diodes (OLEDs): Challenges and Opportunities

Investigation of structural, electronic, magnetic and mechanical properties of a new series of equiatomic quaternary Heusler alloys CoYCrZ (Z = Si, Ge, Ga, Al): A DFT study

Hyperscaling above the upper critical dimension

We present a unified view of finite-size scaling (FSS) in dimension $d$ above the upper critical dimension, for both free and periodic boundary conditions. We find that the modified FSS proposed some time ago to allow for violation of hyperscaling due to a dangerous irrelevant variable applies only to $\mathbf{k}=\mathbf{0}$ fluctuations, and ``standard'' FSS applies to $\mathbf{k}\ensuremath{\ne}\mathbf{0}$ fluctuations. Hence the exponent $\ensuremath{\eta}$ describing power-law decay of correlations at criticality is unambiguously $\ensuremath{\eta}=0$. With free boundary conditions, the finite-size ``shift'' is greater than the rounding. Nonetheless, using $T\ensuremath{-}{T}_{L}$, where ${T}_{L}$ is the finite-size pseudocritical temperature, rather than $T\ensuremath{-}{T}_{c}$, as the scaling variable, the data do collapse onto a scaling form that includes the behavior both at ${T}_{L}$, where the susceptibility $\ensuremath{\chi}$ diverges like ${L}^{d/2}$, and at the bulk ${T}_{c}$, where it diverges like ${L}^{2}$. These claims are supported by large-scale simulations on the five-dimensional Ising model.

Finite-size scaling above the upper critical dimension.

https://scholarsmine.mst.edu/cgi/viewcontent.cgi?article=3648&context=matsci_eng_facwork

Mechanical properties of Heusler alloys.

The finite-size scaling study of the specific heat and the Binder parameter for the six-dimensional Ising model

Investigation of structural, half-metallic and elastic properties of a new full-Heusler compound–Ir2MnSi

Temperature dependent magnetization of Ni0.5Co1.5MnSb quaternary Heusler alloy is investigated both theoretically (m-T) and experimentally (M-T). According to the XRD data, the crystal structure of Ni0.5Co1.5MnSb is compatible with the cubic crystal structure with space group symmetry Fm-3m and the lattice parameter of a = 5.968 A. Experimental M-T curve is obtained at H = 1 T. The Curie temperature is obtained at about TCEXP = 538.3 K. We also use effective field theory (EFT) developed by Kaneyoshi to model and investigate the m-T properties of Ni0.5Co1.5MnSb. We find that the theoretical m-T and experimental M-T results overlap at low temperatures (T   100 K). In particular, the theoretical mSb3-T curve of the central Sb3 atom is much closer to the experimental M-T curve of Ni0.5Co1.5MnSb than that of the other components (mMn1, mMn2, mMn3, mSb1, mSb2, mNi and mCo). Therefore, we strongly propose that one needs to pay close attention to the magnetization of the central atom especially in the lattice of Heusler alloys in both their predictive and experimental studies.

Key role of central antimony in magnetization of Ni0.5Co1.5MnSb quaternary Heusler alloy revealed by comparison between theory and experiment

The effect of the increase of linear dimensions on exponents obtained by finite-size scaling relations for the six-dimensional Ising model on the Creutz cellular automaton

Ziya Merdan

Papers

The finite-size scaling study of the specific heat and the Binder parameter for the six-dimensional Ising model

Investigation of structural, half-metallic and elastic properties of a new full-Heusler compound–Ir2MnSi

Key role of central antimony in magnetization of Ni0.5Co1.5MnSb quaternary Heusler alloy revealed by comparison between theory and experiment

The effect of the increase of linear dimensions on exponents obtained by finite-size scaling relations for the six-dimensional Ising model on the Creutz cellular automaton

First principle predictions on half-metallic results of MnZrX (X = In, Tl, C, Si, Ge, Sn, Pb, N, P, As, Sb, O, S, Se, Te) half-Heusler compounds