搜索结果: 1-15 共查到“知识库 非晶态物理学”相关记录27条 . 查询时间(5.394 秒)
具有无序原子堆积排列和亚稳能量状态的非晶合金表现出诸如高强度、强耐腐蚀性和高表面活性等独特的机械、物理和化学行为。非晶合金成分和结构的广泛可调性为进一步改善物理和化学性质提供了多种可能途径，使非晶合金在催化领域具有广阔的应用前景。其中，铁基非晶合金在偶氮染料降解方面有显著的催化效率。由于晶相和非晶相的协同优势，通过在非晶基质中引入额外的晶相可以进一步提高催化性能。然而，传统快冷和退火诱导出的非晶-...
新型优异软磁非晶-纳米晶过渡态合金（图）
软磁非晶 纳米晶 过渡态合金 铁基非晶合金
2023/1/5
铁基非晶合金是目前已经得到大规模应用的非晶合金之一。由于其独特的无序结构，表现出极其优异的软磁性能，如低矫顽力、低损耗等特点，广泛应用于各类电力电子的磁性器件中，具有显著的节能环保优势。对这类非晶合金进行合适的热处理，可在非晶基体上析出细小、均匀的纳米晶体，从而得到纳米晶软磁合金，可使其性能进一步提高。现代电子电力设备逐渐向小型化、高效化和节能化发展，这要求软磁合金材料具有高饱和磁感应强度（Bs，...
假而不休，研学不停——之非晶态物理与先进金属功能材料课题组（图）
非晶态物理 先进金属功能材料 课题组
2022/12/28
该课题组由余鹏教授带领，李冬梅副教授、郭小龙老师、唐本镇老师，研究生白成、彭嘉欣、陈红果、江俊颖、万竹青等组成。该课题组长期聚焦非晶态物理领域的探索，重点研究典型非晶态物质-金属玻璃的结构、力学与制备工艺，同时对非晶态合金及其复合材料、化合物的功能特性，如磁性、电催化性能也有深入研究。近年来，获省部级奖励5项，其中重庆市自然科学二等奖2项，主持国家自然科学基金3项，市级重点项目和人才项目7项，累计...
低温漂巨磁阻抗磁敏开关的设计
磁敏开关 Fe基合金薄带 巨磁阻抗效应 工作点
2014/4/22
Fe73.5Cu1Nb3Si13.5B9 非晶合金薄带在540℃下17.8MPa拉应力退火后具有宽平台和陡峻下降沿的巨磁阻抗特性，据此研制了一款新型磁敏开关。文中介绍了磁敏材料的GMI特性及磁敏开关的电路设计原理，对磁敏开关的磁场和温度特性进行了测试，结果表明：该磁敏开关的重复性好，迟滞误差小，温漂低。
Nucleation of vacuum bubbles in Brans-Dicke type theory
Nucleation of vacuum Brans-Dicke type theory
2010/12/21
In this paper, we study nucleation of vacuum bubbles in the Brans-Dicke type theory of
gravity. In the Euclidean signatures, we calculate field combinations of vacuum bubbles as
solutions of Einstei...
Peculiar long-range superexchange in Cu2A2O7 (A = P, As, V): a spectacle of anions
Peculiar long-range superexchange spectacle of anions
2010/11/25
A microscopic magnetic model for -Cu2P2O7 is evaluated in a combined theoretical and ex-
perimental study. Despite a dominant intradimer coupling J1, sizable interdimer couplings enforce magnetic or...
Quantum fluctuations in the effective pseudospin-1/2 model for magnetic pyrochlore oxides
effective pseudospin-1/2 model magnetic pyrochlore oxides
2010/11/25
The e ective quantum pseudospin-1=2 model for interacting rare-earth magnetic moments, which
are locally described with atomic doublets, is studied theoretically for magnetic pyrochlore oxides.It is ...
Equilibration of Concentrated Hard Sphere Fluids
Equilibration Concentrated Hard Sphere Fluids
2010/11/24
We report a systematic molecular dynamics study of the isochoric equilibration of hard-sphere
fluids in their metastable regime close to the glass transition. The thermalization process starts with t...
Tunable band gaps in bilayer graphene-BN heterostructures
Tunable band gaps bilayer graphene-BN heterostructures
2010/11/19
We investigate band-gap tuning of bilayer graphene between hexagonal boron nitride sheets,
by external electric elds. Using density functional theory, we show that the gap is continuously tunable fr...
Transport Phenomena in Fluids: Finite-size scaling for critical behavior
Transport Phenomena critical behavior
2010/11/19
Results for transport properties, in conjunction with phase behavior and thermodynamics, are
presented at the criticality of a binary Lennard-Jones fluid from Monte Carlo and molecular dy-
namics si...
Enhanced shear separation for chiral magnetic colloidal aggregates
Enhanced shear separation chiral magnetic colloidal aggregates
2010/11/18
We study the designing principles of the simplest colloidal propeller, an architecture built from four identical spheres that can couple translation with rotation to produce controlled drift motion.By...
Measuring Colloidal Forces from Particle Position Deviations inside an Optical Trap
Measuring Colloidal Forces Particle Position Deviations
2010/11/17
We present a method to measure interaction forces between pairs of charged colloidal particles
suspended in a relatively low-polar medium (5 . " . 8) directly from the deviations of particle
positio...
Predictions of hadronic observables in Pb+Pb collisions at \surd sNN = 2.76 TeV from a hadronic rescattering model
Predictions of hadronic observables Pb+Pb collisions \surd sNN = 2.76 TeV hadronic rescattering model
2011/1/6
A kinematic model based on the superposition of p + p collisions, relativistic geometry and
final-state hadronic rescattering is used to predict various hadronic observables in psNN = 2.76 TeV Pb + P...
Solvation Effects in Phase Transitions in Soft Matter
Solvation Effects in Phase Transitions Soft Matter
2010/11/18
Phase transitions in polar binary mixtures can be drastically altered even by a small amount of salt. This is because the preferential solvation strongly depends on the ambient composition.