Magnetization of Nano-Size Subsystem in a Two-Dimensional Ising Square Lattice
Magnetization of Nano-Size Subsystem in a Two-Dimensional Ising Square Lattice作者机构：College of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha China College of Chemistry and Chemical Engineering Central South University Changsha China College of Science Guangxi University for Nationalities Nanning China Guangxi Key Laboratory of Hybrid Computational and IC Design Analysis Nanning China Guangxi Key Laboratory of Hybrid Computational and IC Design Analysis Nanning China
出 版 物：《World Journal of Condensed Matter Physics》 (凝固态物理国际期刊（英文）)
年 卷 期：2012年第2卷第4期
页 面：175-180页
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
主 题：Magnetization Ising Square Lattice Nano-Size Subsystem
摘 要：A two-dimensional Ising square lattice is modeled as a nano-size block array to study by Monte Carlo simulation the magnetic thermal stability of nano-structure magnetic media for data storage, thereon in the blocks J1 0 is assigned for the interaction of a pair of nearest-neighbor spins, while 0 J0 J1 for that in regions between the blocks and (J0 + J1)/2 for the nearest-neighbor pairs with one in the block and the other one out of but near-most the block. We show that the magnetic thermal stability of the block accrues with the increase of J1 and with the decrease of J1 - J0 for a given J1, but contrarily, the anchoring ability for the initial magnetic orientation in nano-size block trails off as J1 - J0 diminish. This phenomena and size dependence of such anchoring ability are discussed in detail.
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