Wang T, Wang Y, Fu Y, Hasegawa T, Oshima H, Itoh K, Nishio K, Masuda H, Li F S, Saito H, Ishio S
VBL of Akita University, Gakuen Machi 1-1, Tegata, Akita 010-8502, Japan. Institute of Applied Magnetics, Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, People's Republic of China.
Nanotechnology. 2008 Nov 12;19(45):455703. doi: 10.1088/0957-4484/19/45/455703. Epub 2008 Oct 9.
The magnetization reversal process of an ordered Co nanorod array is shown using the images obtained from successive in-field magnetic force microscope (MFM) measurements. The magnetization reversal model is discussed according to local and whole magnetization reversal properties measured by the polar magneto-optical Kerr effect (PMOKE) and an alternating gradient magnetometer (AGM), respectively. Additionally, the dipolar field was probed using in-field MFM measurements. By removing the effect of the dipolar field, an intrinsic switching field distribution (SFD) is shown in a map with a hexagonal array. A detailed study of the dipolar field in ordered nanorod arrays with various diameters and pitches was carried out by numerical calculations.
利用连续场中磁力显微镜（MFM）测量获得的图像，展示了有序钴纳米棒阵列的磁化反转过程。根据分别通过极化磁光克尔效应（PMOKE）和交变梯度磁力计（AGM）测量的局部和整体磁化反转特性，讨论了磁化反转模型。此外，通过场中MFM测量探测了偶极场。通过消除偶极场的影响，在具有六边形阵列的图中显示了本征开关场分布（SFD）。通过数值计算对具有不同直径和间距的有序纳米棒阵列中的偶极场进行了详细研究。
