Preface: Recent Developments in High-Tc Superconductors

In this special issue, we present to the readers the current experimental results in theresearch of materials processing, superconducting properties, and industrialapplications. The invited authors in this special issue are prominent researchers in thesuperconductivity community. The readers will be able to find this special issuevaluable and current information in several key areas including thin films, largedomain growth, flux pinning, coated conductors, and MgBsynthesis.