142 citations · 801 across the 33 of their papers we have counts for
25 papers · 1 filter
Influence of amorphous phase on coercivity in SmCo5-Cu nanocomposites
Franziska Staab, Yangyiwei Yang, Eren Foya +10
Severe plastic deformation of powder blends consisting of SmCo5-Cu results in magnetically hardened nanocomposite bulk materials. The microstructure is continuously refined with in…
Micromagnetics and Multiscale Hysteresis Simulations of Permanent Magnets
Yangyiwei Yang, Patrick Kühn, Mozhdeh Fathidoost +1
Confronting the unveiled sophisticated multiscale structural and physical characteristics of hysteresis simulation of permanent magnets, notably samarium-cobalt (Sm-Co) alloy, a no…
Giant magnetocaloric effect in magnets down to the monolayer limit
Weiwei He, Yan Yin, Qihua Gong +5
Two-dimensional magnets could potentially revolutionize information technology, but their potential application to cooling technology and magnetocaloric effect (MCE) in a material…
Thermodynamically consistent non-isothermal phase-field modelling of elastocaloric effect: indirect vs direct method
Wei Tang, Qihua Gong, Min Yi +2
Modelling elastocaloric effect (eCE) is crucial for the design of environmentally friendly and energy-efficient eCE based solid-state cooling devices. Here, a thermodynamically con…
Tailoring magnetic hysteresis of Fe-Ni permalloy by additive manufacturing: Multiphysics-multiscale simulations of process-property relationships
Yangyiwei Yang, Timileyin David Oyedeji, Xiandong Zhou +2
Designing the microstructure of Fe-Ni permalloy by additive manufacturing (AM) opens new avenues to tailor the materials' magnetic properties. Yet, AM-produced parts suffer from sp…
Modeling and simulation of sintering process across scales
Min Yi, Wenxuan Wang, Ming Xue +2
Sintering, as a thermal process at elevated temperature below the melting point, is widely used to bond contacting particles into engineering products such as ceramics, metals, pol…
Variational quantitative phase-field modeling of nonisothermal sintering process
Timileyin David Oyedeji, Yangyiwei Yang, Herbert Egger +1
In this work, we present a variational and quantitative phase-field model for non-isothermal sintering processes. The model is derived via an extended non-diagonal phase-field mode…
A thermo-mechanical phase-field fracture model: application to hot cracking simulations in additive manufacturing
Hui Ruan, Shahed Rezaei, Yangyiwei Yang +2
Thermal fracture is prevalent in many engineering problems and is one of the most devastating defects in metal additive manufacturing. Due to the interactive underlying physics inv…
Phase-field modeling of paramagnetic austenite-ferromagnetic martensite transformation coupled with mechanics and micromagnetics
Dominik Ohmer, Min Yi, Oliver Gutfleisch +1
A three-dimensional phase-field model is proposed for simulating the magnetic martensitic phase transformation. The model considers a paramagnetic cubic austenite to ferromagnetic…
Lossless Multi-Scale Constitutive Elastic Relations with Artificial Intelligence
Jaber Rezaei Mianroodi, Shahed Rezaei, Nima H. Siboni +2
The elastic properties of materials derive from their electronic and atomic nature. However, simulating bulk materials fully at these scales is not feasible, so that typically homo…
Domain size and charge defects on the polarization switching of antiferroelectric domains
Jinghao Zhu, Zhen Liu, Boyi Zhong +2
The switching behavior of antiferroelectric domain structures under the applied electric field is not fully understood. In this work, by using the phase field simulation, we have s…
Insight into perovskite antiferroelectric phases: Landau theory and phase field study
Zhen Liu, Bai-Xiang Xu
Understanding the appearance of commensurate and incommensurate modulations in perovskite antiferroelectrics (AFEs) is of great importance for material design and engineering. The…
Three-dimensional non-isothermal phase-field modeling of microstructure evolution during selective laser sintering
Yangyiwei Yang, Olav Ragnvaldsen, Yang Bai +2
Predicting the microstructure during selective laser sintering (SLS) is of great interests, which can compliment the current time and cost expensive trial-and-error principle with…
Calculating temperature-dependent properties of NdFeB permanent magnets by atomistic spin model simulations
Qihua Gong, Min Yi, Richard F. L. Evans +2
Temperature-dependent magnetic properties of NdFeB permanent magnets, i.e., saturation magnetization , effective magnetic anisotropy constants $K_i^\text{…
Phase-field modeling of non-isothermal grain coalescence in the unconventional sintering techniques
Yangyiwei Yang, Min Yi, Bai-Xiang Xu +1
A thermodynamically consistent phase-field model is developed to study the non-isothermal grain coalescence during the sintering process, with a potential application to the simula…
Tailoring the electrocaloric effect by internal bias fields and field protocols
Yang-Bin Ma, Bai-Xiang Xu, Karsten Albe +1
In acceptor doped ferroelectrics and in ferroelectric films and nanocomposites, defect dipoles, strain gradients, and the electric boundary conditions at interfaces and surfaces of…
On the origin of incoherent magnetic exchange coupling in MnBi/FeCo bilayer system
Sareh Sabet, Ashkan Moradabadi, Saleh Gorji +9
In this study we investigate the exchange coupling between the hard magnetic compound MnBi and the soft magnetic alloy FeCo including the interface structure between the two phases…
Computational study on microstructure evolution and magnetic property of laser additively manufactured magnetic materials
Min Yi, Bai-Xiang Xu, Oliver Gutfleisch
Additive manufacturing (AM) offers an unprecedented opportunity for the quick production of complex shaped parts directly from a powder precursor. But its application to functional…
Strain-mediated magnetoelectric effect for the electric-field control of magnetic states in nanomagnets
Min Yi, Bai-Xiang Xu, Dietmar Gross
Electric-field control of magnetism without electric currents potentially revolutionizes spintronics towards ultralow power. Here by using mechanically coupled phase field simulati…
Voltage-driven charge-mediated fast 180 degree magnetization switching in nanoheterostructure at room temperature
Min Yi, Hongbin Zhang, Bai-Xiang Xu
Voltage-driven 180 magnetization switching without electric current provides the possibility for revolutionizing the spintronics. We demonstrated the voltage-driven charge-…
Multiscale examination of strain effects in Nd-Fe-B permanent magnets
Min Yi, Hongbin Zhang, Oliver Gutfleisch +1
We have performed a combined first-principles and micromagnetic study on the strain effects in Nd-Fe-B magnets. First-principles calculations on Nd2Fe14B reveal that the magnetocry…
Determination of optimal reversed field with maximal electrocaloric cooling by a direct entropy analysis
Yang-Bin Ma, Nikola Novak, Karsten Albe +1
Application of a negative field on a positively poled ferroelectric sample can enhance the electrocaloric cooling and appears as a promising method to optimize the electrocaloric c…
State transition and electrocaloric effect of BaZrTiO: simulation and experiment
Yang-Bin Ma, Christian Molin, Vladimir V. Shvartsman +4
The electrocaloric effect (ECE) of BaZrTiO (BZT) is closely related to the relaxor state transition of the materials. This work presents a systematic study on the…
A phase-field model of relaxor ferroelectrics based on random field theory
Shuai Wang, Min Yi, Bai-Xiang Xu
A mechanically coupled phase-field model is proposed for the first time to simulate the peculiar behavior of relaxor ferroelectrics. Based on the random field theory for relaxors,…