Affiliation:
1. State Key Laboratory of Applied Organic Chemistry (SKLAOC) Key Laboratory of Special Function Materials and Structure Design (MOE) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
2. Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education School of Physical Science and Technology Lanzhou University Lanzhou 730000 P. R. China
3. Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry School of Sciences Tianjin University Tianjin 300072 P. R. China
Abstract
AbstractFerromagnetic semiconductors (FMS) enable simultaneous control of both charge and spin transport of charge carriers, and they have emerged as a class of highly desirable but rare materials for applications in spin field‐effect transistors and quantum computing. Organic–inorganic hybrid perovskites with high compositional adjustability and structural versatility can offer unique benefits in the design of FMS but has not been fully explored. Here, a series of molecular FMSs based on the 2D organic–inorganic hybrid perovskite structure, namely (2ampy)CuCl4, (3ampy)CuCl4, and (4ampy)CuCl4, is demonstrated, which exhibits high saturation magnetization, dramatic temperature‐dependent conductivity change, and tunable ferromagnetic resonance. Magnetic measurements reveal a high saturation magnetization up to 18.56 emu g−1 for (4ampy)CuCl4, which is one of the highest value among reported hybrid FMSs to date. Conductivity studies of the three FMSs demonstrate that the smaller adjacent octahedron distance in the 2D layer results in higher conductivity. Systematic ferromagnetic resonance investigation shows that the gyromagnetic ratio and Landau factor values are strongly dependent on the types of organic cations used. This work demonstrates that 2D hybrid perovskite materials can simultaneously possess both tunable long‐range ferromagnetic ordering and semiconductivity, providing a straightforward strategy for designing and synthesizing high‐performance intrinsic FMSs.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
China Postdoctoral Science Foundation
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science