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The electronic structure of diluted (Ga,Mn)As magnetic semiconductors in the presence of As-antisites and magnetic disorder is studied within the framework of the local spin density approximation. Both the chemical and magnetic disorders…

材料科学 · 物理学 2007-05-23 J. Kudrnovsky , I. Turek , V. Drchal , J. Masek , F. Maca , P. Weinberger

Academic performance depends on a multivariable nexus of socio-academic and financial factors. This study investigates these influences to develop effective strategies for optimizing students' CGPA. To achieve this, we reviewed various…

机器学习 · 计算机科学 2025-08-04 Bushra Akter , Md Biplob Hosen , Sabbir Ahmed , Mehrin Anannya , Md. Farhad Hossain

We report on a comprehensive combined experimental and theoretical study of Curie temperature trends in (Ga,Mn)As ferromagnetic semiconductors. Broad agreement between theoretical expectations and measured data allows us to conclude that…

High-fidelity, data-driven models that can quickly simulate thermal behavior during additive manufacturing (AM) are crucial for improving the performance of AM technologies in multiple areas, such as part design, process planning,…

Machine learning (ML) is widely used to explore crystal materials and predict their properties. However, the training is time-consuming for deep-learning models, and the regression process is a black box that is hard to interpret. Also, the…

材料科学 · 物理学 2023-08-22 Xinyu Jiang , Haofan Sun , Kamal Choudhary , Houlong Zhuang , Qiong Nian

Understanding thermal stress evolution in metal additive manufacturing (AM) is crucial for producing high-quality components. Recent advancements in machine learning (ML) have shown great potential for modeling complex multiphysics problems…

机器学习 · 计算机科学 2024-12-30 R. Sharma , Y. B. Guo

Prediction of a machine's Remaining Useful Life (RUL) is one of the key tasks in predictive maintenance. The task is treated as a regression problem where Machine Learning (ML) algorithms are used to predict the RUL of machine components.…

机器学习 · 计算机科学 2022-05-03 Talhat Khan , Kashif Ahmad , Jebran Khan , Imran Khan , Nasir Ahmad

Nowadays, deep neural networks are widely used in a variety of fields that have a direct impact on society. Although those models typically show outstanding performance, they have been used for a long time as black boxes. To address this,…

机器学习 · 计算机科学 2022-10-11 Huawei Sun , Lorenzo Servadei , Hao Feng , Michael Stephan , Robert Wille , Avik Santra

Temperature fluctuations significantly affect microorganism growth and pest activities in grain pile, precise monitoring and forecasting temperature of stored grain are essential for maintaining the quality and safety of grain storage. This…

计算工程、金融与科学 · 计算机科学 2024-04-18 Donghao Chen , Binkun Liu

Many explainable AI (XAI) techniques strive for interpretability by providing concise salient information, such as sparse linear factors. However, users either only see inaccurate global explanations, or highly-varying local explanations.…

人机交互 · 计算机科学 2024-04-11 Jessica Y. Bo , Pan Hao , Brian Y. Lim

Accurately predicting the Curie temperature ($T_c$) of ferroelectrics from first principles remains a major challenge, as theoretical estimates often fall significantly below experimental values. In this work, we investigate the origin of…

材料科学 · 物理学 2026-01-21 Denan Li , Chris Ahart , Shi Liu

The Curie-Weiss model is an exactly soluble model of ferromagnetism that allows one to study in detail the thermodynamic functions, in particular their properties in the neighbourhood of the critical temperature. In this model every…

统计力学 · 物理学 2021-10-15 Martin Kochmański , Tadeusz Paszkiewicz , Sławomir Wolski

We propose a non-collinear spin-constrained method that generates training data for deep-learning-based magnetic model, which provides a powerful tool for studying complex magnetic phenomena that requires large-scale simulations at the…

We study the interatomic exchange interactions and Curie temperatures in half-metallic semi Heusler compounds NiCrZ (Z=P, Se, Te) and NiVAs. The study is performed within the framework of density functional theory. The calculation of…

材料科学 · 物理学 2015-06-25 E. Sasioglu , L. M. Sandratskii , P. Bruno

Regression trees are one of the oldest forms of AI models, and their predictions can be made without a calculator, which makes them broadly useful, particularly for high-stakes applications. Within the large literature on regression trees,…

机器学习 · 计算机科学 2023-04-11 Rui Zhang , Rui Xin , Margo Seltzer , Cynthia Rudin

A lattice spin-fermion model for diluted magnetic semiconductors (DMS) is investigated numerically, improving on previously used mean-field (MF) approximations. Curie temperatures are obtained varying the Mn-spin x and hole n densities, and…

强关联电子 · 物理学 2009-11-07 Gonzalo Alvarez , Matthias Mayr , Elbio Dagotto

Thermally assisted magnetic writing is an important technology utilizing temperature dependent magnetic properties to enable orientation of a magnetic data storage medium. Using an atomistic spin model we study non-equilibrium field cooled…

介观与纳米尺度物理 · 物理学 2014-09-26 R. F. L. Evans , W. J. Fan

We theoretically investigate impurity correlation and magnetic clustering effects on the long-range ferromagnetic ordering in diluted magnetic semiconductors, such as $\textrm{Ga}_{1-x}\textrm{Mn}_{x}\textrm{As}$, using analytical arguments…

材料科学 · 物理学 2009-11-11 D. J. Priour , S. Das Sarma

Infinite nuclear matter provides valuable insights into the behavior of nuclear systems and aids our understanding of atomic nuclei and large-scale stellar objects such as neutron stars. However, partly due to the large basis needed to…

核理论 · 物理学 2024-12-31 Julie Butler , Morten Hjorth-Jensen , Gustav R. Jansen

The success of the Materials Genome Initiative has led to opportunities for data-driven approaches for materials discovery. The recent development of Polymer Genome (PG), which is a machine learning (ML) based data-driven informatics…

计算物理 · 物理学 2019-08-08 Manav Ramprasad , Chiho Kim