缺损钴纳米环磁特性模拟研究Simulation Study of Magnetic Properties for Defect Co Nanorings
黄盛凯;陈水源;吴金铃;徐菊艳;王文静;张裕祥;叶晴莹;冯倩;黄志高;
摘要(Abstract)：
利用蒙特卡洛(MC)方法结合快速傅立叶变换微磁学(FFTM)方法,研究了缺损钴纳米环材料的磁特性,模拟结果表明:缺损钴纳米环的磁滞回线依然存在典型的双稳态特征.当缺损纳米环中的内半径变化时,在外磁场的作用下依然存在着洋葱态和涡旋态,但在外磁场变化过程中出现了多次局部涡旋的过渡状态,随着缺损程度的变化,其磁化行为也发生变化.
关键词(KeyWords)： 蒙特卡洛模拟;快速傅立叶变换微磁学方法;缺损钴纳米环;磁特性
基金项目(Foundation): 国家自然科学基金资助项目(11404059);; 福建省自然科学基金资助项目(2017J01553;2016J01007);; 福建师范大学本科教学改革研究项目(I201701003);; 大学生创新创业训练计划项目(cxxl-2016087;ccxl-2017121;201710394006)
作者(Authors): 黄盛凯;陈水源;吴金铃;徐菊艳;王文静;张裕祥;叶晴莹;冯倩;黄志高;
参考文献(References)：
- [1]PATRICK Parkinson,NUNTAPON Kamonsutthipaijit,HARRY L Anderson,et al.Size-independent energy transfer in biomimeticnanoring complexes[J].Acs Nano,2016,10(6):5933-5940.
- [2]KIM D O,RYEOL LEE D,CHOI Y,et al.Inducing vortex formation in multilayered circular dots using remanent curves[J].Appl Phys Lett,2012,101:192404-1-4.
- [3]COWBURN R P.Property variation with shape in magnetic nanoelements[J].J Phys D,2000,33(1):R1-R16.
- [4]GUBBIOTTI G,TACCHI S,MADAMI M,et al.Collective spin waves in a bicomponent two-dimensional magnonic crystal[J].Appl Phys Lett,2012,100:162407-1-5.
- [5]NGUYEN H T,COTTAM M G.Theory of spin-wave instability thresholds for ultrathin ferromagnetic films under parallel pumping[J].Phys Rev B,2014,89(14):162-169.
- [6]MONTICONE I F,AL U'A.The quest for optical magnetism:from split-ring resonators to plasmonic nanoparticles and nanoclusters[J].J Mater Chem C,2014,2(43):9059-9072.
- [7]SHINJO T,OKUNO T,HASSDORF R T,et al.Magnetic vortex core observation in circular dots of permalloy[J].Science,2000,289(5481):930-932.
- [8]CHEN R,RONG C B,ZHANG H W,et.al.Micromagnetic analysis of the magnetization reversal processes in Sm(Co,Cu,Fe,Zr)z magnets Sm(Co,Cu,Fe,Zr)z[J].Acta,Physica Sinica,2004,53(12):4341-4346.
- [9]习小文.铁磁构件应力磁化及反转效应的数值模拟与试验研究[D].南昌:南昌航空大学,2015.
- [10]苗秀娟,王学凤,蓝志环.含有缺口的Co纳米环的微磁学模拟[J].磁性材料及器件,2012(1):24-26.
- [11]何淑婷.纳米线(环)的微磁学计算模拟[D].兰州:兰州大学,2012.
- [12]KUMAR N,VENKAT G,PRABHAKAR A.An iterative solution for spin-wave dispersion in a magnonic ring[J].IEEE Trans Magn,2014,50(9):1-6.
- [13]CHO K,LOGET G,CORN R M.Lithographically patterned nanoscale electrodeposition of plasmonic,bimetallic,semiconductor,magnetic,and polymer nanoring arrays[J].J Phys Chem C,2014,118(50):8993-2900.
- [14]KLAUI M,ROTHMAN J,LOPEZ-DIAZ L,et al.Vortex circulation control in mesoscopic ring magnets[J].Appl Phys Lett,2001,78(21):3268-3270.
- [15]YE Qingying,CHEN Shuiyuan,LIU Jingyao,et al.Study of magnetic properties for Co double-nanorings:monte crlo simulation[J].Journal of Magnetism and Magnetic Materials,2016,408:1–6.
- [16]林枝钦.纳米环的磁特性的数值计算[D].福州:福建师范大学,2009.
- [17]钟克华,冯倩,翁臻臻,等.快速傅立叶变换微磁学方法[J].计算物理,2005,22(6),534-538.