Professor, Dr.Phil. Svend Erik Rasmussen (1925–2026)

Professor, Dr Phil. Svend Erik Rasmussen passed away on the 3^rd of April 2026 at the age of 100. He was one of the founding professors of the Department of Chemistry at Aarhus University when it was established in 1960, and he left a profound mark on both Aarhus University and Danish chemistry.

Svend Erik was born on the 19^th of November 1925 in Esbjerg and obtained his Mag.Scient. degree in chemistry from the University of Copenhagen in 1950. After short appointments at the Royal Veterinary and Agricultural University and the University of Copenhagen, he spent a year at Queen’s College in Dundee before being appointed at the Technical University of Denmark in 1952. He became Professor of Inorganic Chemistry at Aarhus University in 1959, where he established numerous research areas until his retirement in 1995. After his formal retirement, he continued his academic work as Professor Emeritus at the Department of Geoscience until 2017. He was elected to the Royal Danish Academy of Sciences and Letters in 1981.

Svend Erik obtained his Doctor of Science degree in 1960, and his research focused particularly on crystallographic studies of inorganic compounds. He was an early adopter of computer-based calculations in chemical research, and under his leadership, Danish crystallography flourished in the 1960s and 1970s, gaining significant international recognition.

By recruiting excellent scientific and technical staff, Svend Erik’s inorganic division built an extensive instrumentation infrastructure with emphasis on diffraction equipment, and the division had high research activity, particularly within solid-state chemistry. He established the department’s strong tradition of exceptional mechanical and electronics workshops for developing unique scientific equipment. With remarkable foresight, he also involved Aarhus University in the utilisation of the DR3 nuclear reactor at the Risø National Laboratory by securing funding and personnel to build and operate a neutron diffractometer for advanced crystallographic research.

Svend Erik consistently pursued new avenues and established close ties with Danish industrial companies, for whom he conducted advanced scientific measurements as part of revenue-generating activities. He had strong international connections, particularly with French research environments, and in 1980, he was appointed Officier dans l’Ordre des Palmes Académiques. For many years, he contributed to public science communication as the author of numerous articles for the Danish National Encyclopedia. He maintained an extensive international scientific network and held a number of positions of trust, including serving as General Secretary and Treasurer of the International Union of Crystallography from 1972 to 1981, where he bore a strong responsibility for administering the Union's finances and developing the organisation. Svend Erik also arranged successful NATO-supported summer schools in crystallography which were held at Aarhus University. Outstanding lecturers from around the world aroused great interest in the latest developments within crystallography, and the schools paved the way for many Danish students to pursue further studies in leading crystallographic research groups.

In his private life, Svend Erik was married to Finnish-born Dorrit for 73 years. Both were excellent skiers, and even in their late eighties they could often be found on European alpine slopes.

Svend Erik Rasmussen leaves behind an impressive scientific legacy, and we remember with sadness a curious, courageous, and dedicated researcher and teacher of chemistry and crystallography, an outstanding academic leader, a person of deep loyalty to others, and his tireless commitment to Aarhus University.

Honour to the memory of Svend Erik Rasmussen.