We report a theoretical study to use a patterned network of nanomagnets (nanocells) as a new architecture for next-generation computing processors, in which the direction of the magnetization represents a binary signal in each cell. Previous research on magnetic logic focused on using mostly soft materials, such as Permalloy, patterned into cells with a non-circular symmetry to trigger shape-induced in-plane magnetic anisotropy. In this article, instead of shape-dominated magnetic cells as building blocks for magnetic logic, we explore materials with magneto-crystalline anisotropy. Such shape-insensitive nanomagnetic devices can relieve severe fabrication constraints associated with building nanomagnetic cells of narrowly defined shapes. Particularly, we compare materials with in-plane and out-of-plane crystalline anisotropy. Properties of materials with in-plane crystalline anisotropy can be tailored to match those of shape-induced longitudinal nanomagnets while materials with out-of-plane anisotropy could enable a new set of features. For instance, besides the key features of any magnetic logic, i.e., non-volatility, low-power consumption, and radiation hardness, some of the new features of the out-of-plane materials include (i) cost-effective fabrication, (ii) scalability to sub-10-nm dimensions, and (iii) their natural ability to be extended into a three-dimensional (3-D) physical space which opens a new era of technology opportunities.
- 3-D electronics
- Crystalline anisotropy
- Magnetic data channel
- Nanomagnetic logic
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering