Magnetization switching in ferromagnetic microwires

被引：31

作者：

Chizhik, A. ^{[1
]}

Zablotskii, V. ^{[2
,3
]}

Stupakiewicz, A. ^{[4
]}

Gomez-Polo, C. ^{[2
]}

Maziewski, A. ^{[4
]}

Zhukov, A. ^{[1
]}

Gonzalez, J. ^{[1
]}

Blanco, J. M. ^{[5
]}

机构：

[1] UPV, Dept Fis Mat, Fac Quim, San Sebastian 20080, Spain

[2] Univ Publ Navarra, Dept Fis, Pamplona 31006, Spain

[3] ASCR, Inst Phys, CZ-18221 Prague 8, Czech Republic

[4] Univ Bialystok, Magnetism Lab, Fac Phys, PL-15424 Bialystok, Poland

[5] Univ Basque Country, EUPDS, Dept Fis Aplicada 1, San Sebastian 20018, Spain

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 21期

关键词：

AMORPHOUS WIRES; NANOWIRES;

D O I：

10.1103/PhysRevB.82.212401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization states of amorphous soft ferromagnetic microwires are studied by experiment and theoretically. It is shown that in low applied axial fields, on increasing the circular magnetic field produced by current, the initial homogeneous circular magnetization distribution evolves in three sequential steps: (i) the appearance of a helical magnetization state, (ii) a jump to the helical state with opposite chirality, and (iii) a gradual rotation of magnetization toward the new circular state. An applied, large-enough axial field stabilizes the axial magnetization states, making these transitions continuous and shifting the magnetic hysteresis loops. The origin of these successive magnetization reorientations and switching is explained in the frameworks of the proposed model.

引用

页数：4

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