Development of 2D Magnetic Materials... Potential Applications in Spintronics

[Asia Economy Reporter Junho Hwang] Domestic researchers have developed a technology to create a new type of two-dimensional material exhibiting magnetism.

The Korea Atomic Energy Research Institute announced on the 8th that it has developed the world's first method to produce a two-dimensional magnetic material with a thickness of several atomic layers from organic-inorganic halide perovskites. This research achievement was a joint effort led by Dr. Ki-Yeon Kim of the Atomic Energy Research Institute, along with Dr. In-Hwan Oh, Dr. Ga-Ram Park, Professor Cheon-Yeol Yoo of Daegu Gyeongbuk Institute of Science and Technology, and Dr. Jun-Seo Kim, and was recently published in the international academic journal Small.

The research team created a two-dimensional organic-inorganic perovskite crystal (chemical formula A2BX4, where A: organic cation, B: transition metal cation, X: halide anion) composed of layers of inorganic materials containing magnetic transition metals and layers of phenylethylammonium organic materials stacked alternately. They dissolved this crystal in a specially combined organic solvent to break the crystal bonds, then dropped it onto a silicon substrate and rapidly rotated it to allow the structure to form spontaneously. Through this process, they produced an ultrathin film with magnetism and a thickness of 7 to 10 atomic layers. Two-dimensional magnetic materials are advanced new materials that can be utilized in fields using magnetism, such as spintronics.

Dr. Ki-Yeon Kim stated, "Starting with this research result, we will challenge ourselves to create a magnetic material of a single atomic layer," and added, "We will pursue in-depth follow-up research to establish this as a new material for high-efficiency, high-integration, and ultra-lightweight spintronics applications."

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