Magnetic Properties of the Densely Packed Ultra-Long Ni Nanowires Encapsulated in Alumina Membrane

被引：30

作者：

Tishkevich, Daria ^{[1
,2
]}

Vorobjova, Alla ^{[3
]}

Shimanovich, Dmitry ^{[3
]}

Kaniukov, Egor ^{[4
]}

Kozlovskiy, Artem ^{[5
,6
]}

Zdorovets, Maxim ^{[5
,6
,7
]}

Vinnik, Denis ^{[2
]}

Turutin, Andrei ^{[4
,8
,9
]}

Kubasov, Ilya ^{[4
]}

Kislyuk, Alexander ^{[4
]}

Dong, Mengge ^{[10
]}

Sayyed, M., I ^{[11
,12
]}

Zubar, Tatiana ^{[1
,2
]}

Trukhanov, Alex ^{[1
,2
]}

机构：

[1] Natl Acad Sci Belarus, Sci Pract Mat Res Ctr, Lab Magnet Films Phys, Minsk 220072, BELARUS

[2] South Ural State Univ, Lab Single Crystal Growth, Chelyabinsk 454080, Russia

[3] Belarusian State Univ Informat & Radioelect, Dept Micro & Nanoelect, Minsk 220013, BELARUS

[4] Natl Univ Sci & Technol, Dept Technol Elect Mat, Dept Mat Sci Semicond & Dielect, MISIS, Moscow 119049, Russia

[5] LN Gumilyov Eurasian Natl Univ, Engn Profile Lab, Nur Sultan 010000, Kazakhstan

[6] Inst Nucl Phys, Lab Solid State Phys, Alma Ata 050032, Kazakhstan

[7] Ural Fed Univ, Dept Intelligent Informat Technol, Ekaterinburg 620075, Russia

[8] Univ Aveiro, Dept Phys, P-3810193 Aveiro, Portugal

[9] Univ Aveiro, I3N, P-3810193 Aveiro, Portugal

[10] Northeastern Univ, Dept Resource & Environm, Shenyang 110819, Peoples R China

[11] Isra Univ, Fac Sci, Dept Phys, Amman 11622, Jordan

[12] Imam Abdulrahman Bin Faisal Univ IAU, Inst Res & Med Consultat IRMC, Dept Nucl Med Res, Dammam 31441, Saudi Arabia

来源：

NANOMATERIALS | 2021年 / 11卷 / 07期

基金：

俄罗斯科学基金会;

关键词：

porous anodic alumina; template synthesis; nickel; nanowire arrays; anodizing; electrodeposition; magnetic properties; magnetic anisotropy; FERROMAGNETIC-RESONANCE; ARRAYS; NICKEL; BEHAVIOR; ELECTRODEPOSITION; TEMPERATURE; FABRICATION; DEPOSITION; ANISOTROPY; FE;

D O I：

10.3390/nano11071775

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-quality and compact arrays of Ni nanowires with a high ratio (up to 700) were obtained by DC electrochemical deposition into porous anodic alumina membranes with a distance between pores equal to 105 nm. The nanowire arrays were examined using scanning electron microscopy, X-ray diffraction analysis and vibration magnetometry at 300 K and 4.2 K. Microscopic and X-ray diffraction results showed that Ni nanowires are homogeneous, with smooth walls and mostly single-crystalline materials with a 220-oriented growth direction. The magnetic properties of the samples (coercivity and squareness) depend more on the length of the nanowires and the packing factor (the volume fraction of the nanowires in the membrane). It is shown that the dipolar interaction changes the demagnetizing field during a reversal magnetization of the Ni nanowires, and the general effective field of magnetostatic uniaxial shape anisotropy. The effect of magnetostatic interaction between ultra-long nanowires (with an aspect ratio of >500) in samples with a packing factor of >= 37% leads to a reversal magnetization state, in which a "curling"-type model of nanowire behavior is realized.

引用

页数：17