信息存储用磁性介质的记录面密度的不断提高,主要途径之一就是减小磁性颗粒的尺寸.但当磁性粒子减小到一定尺寸后,其磁化方向极易改变(超顺磁性),使所记录的信息丢失,不能再用于磁记录.因此降低磁性颗粒的临界尺寸并提高其热稳定性是信息记录高密度化的关键.就磁记录用磁性颗粒的临界尺寸及其主要影响因素进行了论述.
参考文献
| [1] | Acharya B R;Abarra E N;Inomata A.[M].Joint European Magnetism Symposium,Grenoble (France),2001:B046. |
| [2] | Aharoni A;Frei E H;Schieber M .[J].Journal of Physics and Chemistry of Solids,1962,23:545. |
| [3] | Bennetch L M .[P].Ger Pat 2 520 379,1975. |
| [4] | Matsui G;Toda K et al.[Q].Japan Pat,75 118 298,1975. |
| [5] | Sato M;Yokoyama S;Hosino Y .[J].Kogyo Kagaku Zasshi,1962,65:1336. |
| [6] | Toda H;Shimizu S;Ihara H .[P].US 3 720 618,1973. |
| [7] | Kugimiya K .[P].Japan Pat 75 88 598,1975. |
| [8] | Uehori T;Hosaka A et al.Magnetic properties of ironcobalt alloy particles for magnetic recording media[J].IEEE Transactions on Magnetics,1978,14(05):852. |
| [9] | Charap S.H.;Pu-Ling Lu .Thermal stability of recorded information at high densities[J].IEEE Transactions on Magnetics,1997(1):978-983. |
| [10] | Weller D;Moser A .Thermal effect limits in ultrahigh-density magnetic recording[J].IEEE Transactions on Magnetics,1999,35:4423. |
| [11] | Sun S;Murray C B;Weller D .Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices[J].Science,2000,287:1989. |
| [12] | Bertram H.N.;Zhou H. .Signal to noise ratio scaling and density limit estimates in longitudinal magnetic recording[J].IEEE Transactions on Magnetics,1998(4):1845-1847. |
| [13] | Weller D.;Folks L.;Best ME.;Lee W.;Toney MF.;Schwickert M. Thiele JU.;Doerner MF.;Moser A. .High K-u materials approach to 100 Gbits/in(2)[J].IEEE Transactions on Magnetics,2000(1 Pt.1):10-15. |
| [14] | Anders S;Sun S;Murray C B.Lithography and selfassembly for nanometer scale magnetism[J].Microelectronic Engineering,2002:569. |
| [15] | Camras M .[P].US Pat,2 694 656,1954. |
| [16] | Lopez D;Cendoya I .Preparation and characterization of polystyrene-based magneticnanocomoposites Thermal,me chanical and magnetic properties[J].Polymer Engineering and Science,2001,41(11):1845. |
| [17] | 陆明岳.MnZn铁氧体超顺磁性研究[J].磁性材料及器件,1995 |
| [18] | Rath C;Sahu K K et al.Preparation and characterization of nanosize Mn-Zn ferrite[J].Journal of Magnetism and Magnetic Materials,1999,202:77. |
| [19] | Zhang XY.;Wang WK.;Zhang JW. .A novel route for the preparation of nanocomposite magnets[J].Advanced Materials,2000(19):1441-1444. |
| [20] | Hao Zeng;Shouheng Sun;T. S. Vedantam;J. P. Liu;Z.-R. Dai;Z.-L. Wang .Exchange-coupled FePt nanoparticle assembly[J].Applied physics letters,2002(14):2583-2585. |
| [21] | HaoZ;Li J;LIU J P et al.Exchange-coupled nanocomposite magnets by nanoparticle self-assembly[J].NATURE,2002,420:395. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%