In memoriam: M. Nakahira

In memoriam: M. Nakahira

Mat. Res. Bull., Vol. 17, pp. 955-956, 1982. Printed in the USA. 0025-5408/82/080955-02503.00/0 C o p y r i g h t (c) 1982 Pergamon P r e s s Ltd. M...

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Mat. Res. Bull., Vol. 17, pp. 955-956, 1982. Printed in the USA. 0025-5408/82/080955-02503.00/0 C o p y r i g h t (c) 1982 Pergamon P r e s s Ltd.

M. NAKAHIRA IN MEMORIAM

Professor Mitsuoki Nakahira, who died on March 23, 1982 at the age of 71, during a v i s i t to the National I n s t i t u t e for Research in Inorganic Materials in Tsukuba, which he led for many years, was a member of the e d i t o r i a l board of the Bulletin almost since i t s inception. Educated o r i g i n a l l y as a geologist at Tokyo University, he devoted his f i r s t publications to structural features, with emphasis on ordering and phase changing problems in minerals, especially clays. The complexity of these studies in a f i e l d in which he was one of the f i r s t to introduce a crystal chemical approach led him progressively to solid state chemistry. His broad s c i e n t i f i c culture, widespread experience, and t h i r s t for rigorous work explain his impact in t h i s new f i e l d . The harvest is exceptionally wide-ranging and concerns many areas of materials science: crystal growth, phase equilibrium studies, determination of non-stoichiometry, defect ordering, metal-insular t r a n s i t i o n s . In his scient i f i c a c t i v i t y he was equally at ease with thermodynamic methods, structural characterization techniques and physical measurements, with the aim to solve problems with the utmost accuracy and with the broadest impact on outlook. He published several hundred papers in the f i e l d of oxides, sulfides and selenides, of which many constitute basic documents for further research. During 955

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MEMORIAM

Vol. 17, No. 8

the eight years in which he led and developed the research activities at Nirim, he showed daily how broad-minded and open to new research domains he was.

He had many friends in Japan, and also many abroad. He was respected not only as an exceptionally qualified scientist, but also as someone who encouraged contacts between scientists, and between human beings as such. He was upright, responsible, always ready to help generously and to understand the problems of the people around him. He honored Japan, his country, but he was also a citizen of the world. His sudden disappearance was a big shock for all his friends in our materials research community. The loss will never be f i l l e d . We wish to express our deepest sympathy to his family and to his coworkers at the Okayama College of Science.

Paul Hagenmuller