Results 81 to 90 of about 87,432 (237)

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, Volume 28, Issue 3, 4 February 2026.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Relativistic quantum mechanics

, 2016
Abstract This chapter starts with a brief summary of special relativity, describing how 4-vectors and the Lorentz transformation can be represented by complex matrices. Spinors are introduced as basic building blocks of special relativity, allowing a demonstration of how the Weyl equation and the Dirac equation emerge from the Lorentz ...
G. Barr, R. Devenish, R. Walczak, T. Weidberg   +3 more
openaire   +1 more source

Control of Covalent Bond Enables Efficient Magnetic Cooling

Advanced Materials, Volume 38, Issue 7, 2 February 2026.
Giant and reversible magnetocaloric effect (MCE) is achieved by tuning covalency through sub‐unit‐cell chemical engineering, establishing a novel design principle for effective hysteresis control in magnetocaloric materials. Abstract Magnetic cooling, harnessing the temperature change in matter when exposed to a magnetic field, presents an energy ...
Xin Tang, Yoshio Miura, Noriki Terada, Enda Xiao, Shintaro Kobayashi, Allan Döring, Terumasa Tadano, Andres Martin‐Cid, Takuo Ohkochi, Shogo Kawaguchi, Yoshitaka Matsushita, Tadakatsu Ohkubo, Tetsuya Nakamura, Konstantin Skokov, Oliver Gutfleisch, Kazuhiro Hono, Hossein Sepehri‐Amin   +16 more
wiley   +1 more source

Nb2CBr2 MXene Monolayer as a Novel Material: A First Principle Study

Advanced Theory and Simulations, Volume 9, Issue 2, February 2026.
Illustration of the monolayer cell, cell replicated in directions a and b, graph of optical absorption and thermodynamic potentials as a function of temperature. Abstract Niobium‐based MXenes show promising properties and applications, but have not yet been sufficiently investigated, especially with halogen surface terminations. This study investigates
Leonardo S. Barbosa, Willian O. Santos, Felix S. Costa, Edvan Moreira, David L. Azevedo   +4 more
wiley   +1 more source

The Wigner formalism on black hole geometries

European Physical Journal C: Particles and Fields
This work explores the intersection of quantum mechanics and curved spacetime by employing the Wigner formalism to investigate quantum systems in the vicinity of black holes.
Jose A. R. Cembranos, David García García   +1 more
doaj   +1 more source

On hydrogen-like bound states in N $$ \mathcal{N} $$ = 4 super Yang-Mills

Journal of High Energy Physics, 2017
Using relativistic quantum mechanics, we study the spectrum of a non-BPS two-particle bound state in the massive phase of N $$ \mathcal{N} $$ = 4 super Yang-Mills, in the limit when one of the particles is infinitely heavier than the other.
Yusuke Sakata, Robin Schneider, Yuji Tachikawa, Takemasa Yamaura   +3 more
doaj   +1 more source

Is There A Pure Electronic Ferroelectric?

Advanced Electronic Materials, Volume 12, Issue 3, 4 February 2026.
The search for faster, more reliable ferroelectric materials has shifted from traditional lattice‐driven ferroelectrics, which rely on slow ionic displacements, to electronic ferroelectrics, where polarization is governed by electronic ordering. This shift enables ultrafast switching, low‐field operation, and resistance to fatigue.
Xudong Wang, Guichen Teng, Xiangjian Meng, Zhenxiang Cheng, Tie Lin, Hao Shen, Xiaodan Wang, Jianlu Wang, Junhao Chu   +8 more
wiley   +1 more source

Spectral Parameter Power Series Representation for Regular Solutions of the Radial Dirac System

Mathematical Methods in the Applied Sciences, Volume 49, Issue 3, Page 2098-2113, February 2026.
ABSTRACT A spectral parameter power series (SPPS) representation for the regular solution of the radial Dirac system with complex coefficients is obtained, as well as a SPPS representation for the (entire) characteristic function of the corresponding spectral problem on a finite interval. Based on the SPPS representation, a numerical method for solving
Emmanuel Roque, Sergii M. Torba
wiley   +1 more source

What is the relativistic spin operator?

New Journal of Physics, 2014
Although the spin is regarded as a fundamental property of the electron, there is no universally accepted spin operator within the framework of relativistic quantum mechanics.
Heiko Bauke, Sven Ahrens, Christoph H Keitel, Rainer Grobe   +3 more
doaj   +1 more source

Single‐source precursor synthesis of a compositionally complex early transitional metal nitride (V, Nb, Ta, Mo, W)Nx and its high temperature stability

International Journal of Applied Ceramic Technology, Volume 23, Issue 1, February 2026.
Abstract Compositionally complex transitional metal nitrides are an interesting class of ceramics with superior chemical, thermal, and mechanical stability, with a high potential in ultra‐high temperature applications and catalysis. The exceptionality in the properties may partly be explained as a consequence of their high configuration entropy ...
Dharma Teja Teppala, Milan Pejić, Dejan Zagorac, Esmaeil Adabifiroozjaei, Naina Goyal, Leopoldo Molina‐Luna, Sanjay Mathur, Branko Matović, Emanuel Ionescu   +8 more
wiley   +1 more source