This book contains peer-reviewed papers presented at the 11th International Conference on Materials Science (ICMS 2023) held in Hohhot, China, on October 13-16, 2023, which focused on the study of structure, properties, and applications of new materials as well as techniques of materials characterisation. The conference was organized by Inner Mongolia Association of Science and Technology (China), Inner Mongolia Normal University (China), Inner Mongolia Physical Society (China), the Mongolian Physical Society (Mongolia), the National University of Mongolia, the Institute of Physics and Technology, Mongolian Academy of Sciences (Mongolia), and the Institute of Physical Material Science, SB RAS (Russia).