Cu-Ni core-shell nanowires, with an inner Cu core diameter of about 60 nm and varying Ni shell thicknesses (10, 30, 50, 60, and 80 nm), were successfully fabricated in porous polycarbonate (PC) ion-track templates by a two-step etching and electrodeposition method. In our experiment, the thickness of Ni shell can be effectively tuned through the etching time of templates. The core-shell structure was conifrmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The X-ray diffraction (XRD) pattern elucidates the co-existence of characteristic peaks for both Cu and Ni, indicating no other phases were formed during preparation. Magnetic hysteresis loops measured via vibrating sample magnetometry (VSM) revealed that Cu-Ni core-shell nanowires with thinner Ni shell exhibited obviously diamagnetic character and together with a weak ferromagnetic activity, whereas ferromagnetic behavior was primarily measured for the wires with thicker Ni shell. With increasing Ni shell thickness, the squareness and coercivity value became smaller due to the shape anisotropy and the formation of multi-domain structure.
参考文献
| [1] | J Liu;J L Duam;M E Toimil-Molares .Electrochemical fabrication of single-crystalline and polycrystalline Au nanowires: the influence of deposition parameters[J].Nanotechnology,2006(8):1922-1926. |
| [2] | Kwon Y;Kim H;Lee S et al.Enhanced Ethanol Sensing Properties of TiO2 Nanotube Sensors[J].Sensors and Actuators B-Chemical,2012,173:441-446. |
| [3] | Gu C;Li S;Huang J et al.Preferential Growth of Long ZnO Nano-wires and Its Application in Gas Sensor[J].Sensors and Actuators B-Chemical,2013,177:453-459. |
| [4] | Yao HJ;Mo D;Duan JL et al.Investigation of The Surface Properties of Gold Nanowire Arrays[J].Applied Surface Sinence,2011,258:147-150. |
| [5] | Seabra AB;Duran N .Biological Applications of Peptides Nanotubes:An overview[J].PEPTIDES,2013,39:47-54. |
| [6] | Du C;Chen M;Wang W et al.Platinum-based Intermetallic Nanotubes with a Core-shell Structure as Highly Active and Durable Catalysts for Fuel Cell Applications[J].Journal of Power Sources,2013,240:630-635. |
| [7] | Sang Jun Son;Jonathan Reichel;Bo He;Mattan Schuchman;Sang Bok Lee .Magnetic Nanotubes for Magnetic-Field-Assisted Bioseparation,Biointeraction,and Drug Delivery[J].Journal of the American Chemical Society,2005(20):7316-7317. |
| [8] | Paramasivam I;Nah YC;Das C et al.WO3/TiO2 Nanotubes with Strongly Enhanced Photocatalytic Activity[J].Chemistry-A European Journal,2010,16:8993-8997. |
| [9] | Chu HJ;Zhou CZ;Wang J et al.An Analytical Model for the Critical Shell Thickness in Core/shell Nanowires based on Crystallographic Slip[J].Journal of the Mechanics and Physics of Solids,2013,61:2147-2160. |
| [10] | Fabbri F;Rossi F;Attolini G et al.Luminescence Properties of SiC/SiO2 Core-shell Nanowires with Different Radial Structure[J].Materials Letters,2012,71:137-140. |
| [11] | Zanolli Z;Froberg LE;Bjork MT;Pistol ME;Samuelson L .Fabrication, optical characterization and modeling of strained core-shell nanowires[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2006(2):793-796. |
| [12] | Jang WS;Kim SY;Lee J;Park J;Park CJ;Lee CJ .Triangular GaN-BN core-shell nanocables: Synthesis and field emission[J].Chemical Physics Letters,2006(1-3):41-45. |
| [13] | Naruhiro Koi;Takeo Oku;Masahiko Nishijima .Fe nanowire encapsulated in boron nitride nanotubes[J].Solid State Communications,2005(6):342-345. |
| [14] | Chen YC;Tu CH;Lai YF et al.Growth and Optical Properties of a-and c-axis Oriented Zn-ZnO Nanocables Fabricated via a Facile One-step Process[J].Journal of Alloys and Compounds,2013,554:115-121. |
| [15] | Zahoor A;Teng Q;Wang H et al.Synthesis and Characterization of Ag@polycarbazole Coaxial Nanocables and Their Enhanced Dispersion Behavior[J].METALS AND MATERIALS INTERNATIONAL,2011,17:417-423. |
| [16] | Filippo E;Manno D;Bartolomeo ARD et al.Single Step Synthesis of SnO2-SiO2 Core-shell Microcables[J].Journal of Crystal Growth,2011,330:22-29. |
| [17] | Toimil-Molares ME .Characterization and Properties of Micro-and Nanowires of Controlled Size,Composition,and Geometry Fabricated by Electrodeposition and Ion-track Technology[J].Beilstein J Nanotechnol,2012,3:860-883. |
| [18] | Mo, D;Liu, J;Yao, HJ;Duan, JL;Hou, MD;Sun, YM;Chen, YF;Xue, ZH;Zhang, L .Preparation and characterization of CdS nanotubes and nanowires by electrochemical synthesis in ion-track templates[J].Journal of Crystal Growth,2008(3):612-616. |
| [19] | Chen YF;Liu J;Yao HJ et al.Electrochemical Polymerization and Characterization of Polypyrrole Nanowires and Nanotubules[J].PHYSICA B,2010,405:2461-2465. |
| [20] | Duan JL;Liu J;Mo D et al.Controlled Crystallinity and Crystallo-graphic Orientation of Cu Nanowires Fabricated in Ion-track Templates[J].NANOTECHNOLOGY,2010,21:365605. |
| [21] | P. R. Evans;W. R. Hendren;R. Atkinson .Nickel-Coated Gold-Core Nanorods Produced by Template Assisted Electrodeposition[J].Journal of the Electrochemical Society,2007(9):K79-K82. |
| [22] | Ferain E;Legras R .Track-etch Templates Designed for Micro-and Nanofabrication[J].Nucl Instrum Methods Phys Res Sect B,2003,208:115-122. |
| [23] | Duan JL;Liu J;Yao HJ et al.Controlled Synthesis and Diameter-dependent Optical Properties of Cu Nanowire Arrays[J].MATERIALS SCIENCE & ENGINEERING B,2008,147:57-62. |
| [24] | Wang XW;Yuan ZH;Sun SQ et al.Electrochemically Synthesis and Magnetic Properties of Ni Nanotube Arrays with Small Diameter[J].Materials Chemistry and Physics,2008,112:329-332. |
| [25] | HAN Nian-mei,GUO Guang-hua,ZHANG Guang-fu,SONG Wen-bing,MEN Gao-fu.Domain wall structure transition during magnetization reversal process in magnetic nanowires[J].中国有色金属学会会刊（英文版）,2007(05):1034-1037. |
| [26] | Wang YW;Wang GZ;Wang SX et al.Fabrication and Magnetic Properties of Highly Ordered Co16Ag84 Alloy Nanowire Array[J].Applied Physics A(Materials Science and Processing),2002,74:577-580. |
| [27] | J B Wang;X Z Zhou;Q F Liu .Magnetic texture in iron nanowire arrays[J].Nanotechnology,2004(5):485-489. |
| [28] | Ren Y .Preparation and Study on Tunable Magnetic Anisotropy of Magnetic Nanowire Arrays[D].Lanzhou:Lanzhou University,2010. |
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%