960化工网
Linear magnetoresistance in gold foams
Zhaoguo Li,Jiangshan Luo,Xiulan Tan,Qi Fang,Yong Zeng,Lingbiao Meng,Minjie Zhou,Weidong Wu,Jicheng Zhang
RSC Advances Pub Date : 05/17/2017 00:00:00 , DOI:10.1039/C7RA03979D
Abstract

The electrical transport properties of metal foams may not only be of fundamental research interest but can also lead to wide application in sensors. We report the magnetotransport properties of gold foams prepared by a chemical template–dealloying method. The temperature dependence of the resistivity of gold foams represents a metallic behavior with zero magnetic field. With increasing magnetic field, a crossover from quadratic to linear dependence of the magnetoresistance in gold foams is observed in the studied temperature range (2–50 K). The physical mechanisms resulting in this observation may be ascribed to the classical linear magnetoresistance theory based on the spatial mobility fluctuations or current distribution effect. However, further evidence is required to determine the exact mechanism.

Graphical abstract: Linear magnetoresistance in gold foams
平台客服
平台客服
平台在线客服