Affiliation:
1. Department of Physics, Chongqing Normal University, Chongqing 400047, P. R. China
Abstract
The geometric form effects of magnetoresistivity (MR) from chemical vapor deposited p-type diamond films were investigated. The MR patterns (width/length ratio = 1, 2, 3, 4, 5, 6) were produced on p-type diamond films by photolithography and ion etching in oxygen plasma. The experimental results showed that the MR in diamond films with the strip structure changed with width–length ratio at magnetic field intensity of 3 T. The changes of MR strongly depended on the geometric form of the samples. With the width–length ratio increasing from 1 to 6, the MR increases from 0.08 to 1.0. It was almost changing linearly with the increase of width-to-length ratio. The geometric form effect is closely related to the Hall effect. A calculation formula of form effect of MR was presented.
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics