•  
  •  
 

Journal of Undergraduate Research

Keywords

field cooling, magnetic domain memory, exchange coupled thin films

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

Abstract

In my project, we proposed to investigate the effect of field cooling on magnetic domain memory in ferromagnetic films which are exchange coupled with antiferromagnetic material. We analyzed this memory using X-ray speckle correlation, and we performed complementary microscopy measurements so as to get a visualization of the magnetic domains in real space. This helped us understand how magnetization and cooling processes can influence and optimize the magnetic domain memory (MDM). Magnetic domain memory refers to the ability of the domains in the sample to return to the same shape even after the sample has been saturated. See Figure 1 for an example of the domain structure of our sample. High MDM would mean the domains return to this exact shape after an external field is applied and released. High MDM is not common, this apparent maze is generally random, but we have studied ways to induce MDM to the sample.

Download

Included in

Physics Commons

Share

COinS