Magnetic tape storage is used extensively for data archiving in data centers and by hyperscale cloud companies. Data is stored by writing magnetic transitions with a write transducer on a magnetic tape as it is streamed over a recording head. The write transducers are microfabricated electromagnets that are composed of a ferromagnetic yoke structure and a coil. To continue scaling the capacity of tape systems, it is critical to optimize the behavior of the write transducers. Micromagnetic modeling is a powerful tool that can be used to understand the complex magnetization dynamics that arises during...