Microemulsion synthesis and magnetic properties of Co@Pt core-shell nanoparticles

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	Microemulsion synthesis and magnetic properties of Co@Pt core-shell nanoparticles
	Zhao, YN ; Li, XH ; Li, M ; Mai, ZH ; Yu, Y
刊名	FRONTIERS OF SOLID STATE CHEMISTRY
	2002
页码	473
关键词	NANOCRYSTAL SUPERLATTICES MEDIATED PROCESS METAL PARTICLES COBALT IRON ASSEMBLIES COERCIVITY COLLOIDS CLUSTERS FLUIDS
通讯作者	Zhao, YN: Chinese Acad Sci, Inst Phys & Condensed Matter Phys, Beijing 100080, Peoples R China.
中文摘要	The thickness-dependent coercive field in perovskite-type ferroelectric thin films has been simulated using the four-state Potts model. In this model, four mutually perpendicular dipole orientations result in four different kinds of domains in a film of tetragonal phase. In order to simulate the switching due to the domain wall movement, only those dipoles in the domain boundaries are allowed to rotate. Each rotation is restricted only to 90degrees, either clockwise or counter-clockwise. The influence of space charge is also included. For large thickness, the simulation result agrees with the trend observed in most experiments that the coercive field decreases with thickness. On the other hand, when the thickness is smaller than a critical value, the coercive field increases with thickness. The intrinsic influence governed by the domain-wall movement and the extrinsic effect induced by oxygen vacancies are discussed. This result not only reflects the two different regimes for polarization switching but also imposed design implication on the thin film ferroelectric memory in small thickness.
收录类别	SCI
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/42002]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhao, YN,Li, XH,Li, M,et al. Microemulsion synthesis and magnetic properties of Co@Pt core-shell nanoparticles[J]. FRONTIERS OF SOLID STATE CHEMISTRY,2002:473.
APA	Zhao, YN,Li, XH,Li, M,Mai, ZH,&Yu, Y.(2002).Microemulsion synthesis and magnetic properties of Co@Pt core-shell nanoparticles.FRONTIERS OF SOLID STATE CHEMISTRY,473.
MLA	Zhao, YN,et al."Microemulsion synthesis and magnetic properties of Co@Pt core-shell nanoparticles".FRONTIERS OF SOLID STATE CHEMISTRY (2002):473.