Electrical properties of individual NiFe/Pt multilayer nanowires measured in situ in a scanning electron microscope

Abstract

The electrical properties of individual NiFe/Pt multilayer nanowires have been measured in situ by nanomanipulators in a scanning electron microscope. The electrical measurement of ∼50 nm diameter individual NiFe/Pt multilayer nanowires with polycrystalline microstructure shows that the nanowires have a resistivity of ∼2.2 × 10−7 Ω m (corresponding to a conductivity of ∼4.5× 106 Ω−1 m−1) and average resistance of individual NiFe-Pt interfaces of ∼0.2 Ω. The maximum failure current density of an individual NiFe/Pt nanowire was measured to be ∼9.63 × 1011 A m−2.

Effect of annealing on the electrical and magnetic properties of electrodeposited Ni and permalloy nanowires

“…In 1995 Masuda et al demonstrated the controlled fabrication of nanoporous anodic alumina (AAO) templates [1], enabling the subsequent fast and reliable growth of electrodeposited metallic nanowires. Variations of this approach have developed to allow growth of complex nanowires, including modulated composition [2,3] and defined shape [4]. Electrodeposited nanowires of ferromagnetic materials are of interest due to their promise for applications in such as high-frequency devices [5], high-density magnetic recording [6], sensors [7], biomedicine [8] and spintronic devices [9,10].…”

Robotic in situ stiffness cartography of InP membranes by dynamic force sensing

“…This asset is most convenient at small scales, not only to bring the tools within operating range of the targeted samples, but also for the manipulation of any three-dimensional object. It is thus used for in situ electrical [3] or mechanical [4] characterisation, including mechanical characterisation of biological samples like cells [5]. In such experiments, the SEM can also be coupled with FIB (focused ion beam) [6] or STM (scanning tunneling microscope) [7] techniques.…”

Geometry-Dependent Magnetic Properties of Ising-Type Multisegment Nanowires

“…In this context, the core/shell MNs have been investigated within the framework of the Ising model, such as effective-field theory (EFT) with correlations [13][14][15][16][17][18], mean-field theory (MFT) [19][20][21], and Monte Carlo (MC) simulations [22,23]. On the other hand, segmented MNs consist of alternating structures of wire-wire, tube-tube, and wire-tube structures; due to structural advantages compared to their counterparts, single-component nanostructures have been widely reported in the literature [24][25][26][27][28][29][30][31][32][33][34][35].…”