检索结果-南通市图书馆

Thermal conductivity of dense hcp iron:Direct measurements using laser heated diamond anvil cell

Geoscience Frontiers 2020年第5期11卷 1755-1761页

作者： pinku saha Aritra Mazumder Goutam Dev Mukherjee National Centre for High Pressure Studies Department of Physical SciencesIndian Institute of Science Education and Research KolkataMohanpur CampusMohanpur741246NadiaWest BengalIndia

Thermal conductivity(k)of iron is measured up to about 134 *** measurements are carried out using the single sided laser heated diamond anvil cell,where the power absorbed by a Fe metal foil at hotspot is calculated using a novel thermodynamical *** conductivity of fee(γ)-Fe increases up to a pressure of about46 *** find thermal conductivity values in the range of 70-80 Wm-1K-1(with an uncertainty of 40%),almost constant with pressure,in the hcp(e)phase of *** attribute the pressure independent k above 46 GPa to the strong electronic correlation effects driven by the electronic topological transition(ETT).We predict a value of thermal conductivity ofε-Fe of about 40±16 Wm-1K-1 at the outer core of Earth.

关键词： Laser heated diamond anvil cell Thermal conductivity High pressure effects Geodynamo

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An efficient and accurate framework for calculating lattice thermal conductivity of solids:AFLOW-AAPL Automatic Anharmonic Phonon Library

引用

npj Computational Materials 2017年第1期3卷 79-88页

作者： Jose J.Plata pinku Nath Demet Usanmaz Jesus Carrete Cormac Toher Maarten de Jong Mark Asta Marco Fornari Marco Buongiorno Nardelli Stefano Curtarolo Department of Mechanical Engineering and Materials Science Duke UniversityDurhamNC 27708USA Institute of Materials Chemistry TU WienA-1060 ViennaAustria Department of Materials Science and Engineering University of CaliforniaBerkeley210 Hearst Memorial Mining BuildingBerkeleyUSA SpaceX 1 Rocket RoadHawthorneCA 90250USA Department of Physics and Science of Advanced Materials Program Central Michigan UniversityMount PleasantMI 48859USA Department of Physics and Department of Chemistry University of North TexasDentonTXUSA Materials Science Electrical EngineeringPhysics and ChemistryDuke UniversityDurhamNC 27708USA

One of the most accurate approaches for calculating lattice thermal conductivity,κ_(l),is solving the Boltzmann transport equation starting from third-order anharmonic force *** addition to the underlying approximations of ab-initio parameterization,two main challenges are associated with this path:high computational costs and lack of automation in the frameworks using this methodology,which affect the discovery rate of novel materials with ad-hoc ***,the Automatic Anharmonic Phonon Library(AAPL)is *** efficiently computes interatomic force constants by making effective use of crystal symmetry analysis,it solves the Boltzmann transport equation to obtain κ_(l),and allows a fully integrated operation with minimum user intervention,a rational addition to the current high-throughput accelerated materials development framework ***“experiment ***”study of the approach is shown,comparing accuracy and speed with respect to other available packages,and for materials characterized by strong electron localization and *** AAPL with the pseudo-hybrid functional ACBN0 is possible to improve accuracy without increasing computational requirements.

关键词： properties. harmonic calculating

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High-throughput combinatorial approach expeditesthe synthesis of a lead-free relaxor ferroelectric system

引用

InfoMat 2024年第9期6卷 75-90页

作者： Di Zhang Katherine J.Harmon Michael J.Zachman Ping Lu Doyun Kim Zhan Zhang Nicholas Cucciniello Reid Markland Ken William Ssennyimba Hua Zhou Yue Cao Matthew Brahlek Hao Zheng Matthew M.Schneider Alessandro R.Mazza Zach Hughes Chase Somodi Benjamin Freiman Sarah Pooley Sundar Kunwar pinku Roy Qing Tu Rodney J.McCabe Aiping Chen Center for Integrated Nanotechnologies Los Alamos National LaboratoryLos AlamosNew MexicoUSA Materials Science Division Argonne National LaboratoryLemontIllinoisUSA Center for Nanophase Materials Sciences Oak Ridge National LaboratoryOak RidgeTennesseeUSA Sandia National Laboratories AlbuquerqueNew MexicoUSA Department of Materials Science and Engineering Texas A&M UniversityCollege StationTexasUSA Advanced Photon Source(APS) Argonne National LaboratoryLemontIllinoisUSA Materials Science and Technology Division Oak Ridge National LaboratoryOak RidgeTennesseeUSA Materials Science and Technology Division Los Alamos National LaboratoryLos AlamosNew MexicoUSA

Developing novel lead-free ferroelectric materials is crucial for next-generationmicroelectronic technologies that are energy efficient and ***,materials discovery and property optimization are typicallytime-consuming due to the limited throughput of traditional *** this work,we use a high-throughput combinatorial synthesisapproach to fabricate lead-free ferroelectric superlattices and solid solutions of(Ba_(0.7)Ca_(0.3))TiO_(3)(BCT)and Ba(Zr_(0.2)Ti_(0.8))O_(3)(BZT)phases with continuous variationof composition and layer ***-resolution x-ray diffraction(XRD)and analytical scanning transmission electron microscopy(STEM)demonstratehigh film quality and well-controlled compositional *** dielectric property measurements identify the“optimal propertypoint”achieved at the composition of 48BZT–*** vectormaps reveal that ferroelectric domain sizes are tunable by varying{BCT–BZT}Nsuperlattice *** high-throughput synthesis approach can be appliedto many other material systems to expedite new materials discovery and properties optimization,allowing for the exploration of a large area of phasespace within a single growth.

关键词： ferroelectrics high-resolution x-ray diffraction high-throughput combinatorial synthesis pulsed laser deposition scanning transmission electron microscopy superlattices

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：