@article{oai:kyutech.repo.nii.ac.jp:00000375, author = {Zheng, X.G. and Xu, C.N. and Nishikubo, K and Nishiyama, K and Higemoto, W and Moon, W.J. and Tanaka, E and 小田部, エドモンド 荘司 and Otabe, Edmund Soji}, issue = {1}, journal = {Physical review. Third series. B, Condensed matter and materials physics}, month = {Jul}, note = {Muon spin relaxation/rotation (µSR) and magnetic susceptibility measurements were carried out on antiferromagnetic nanoparticles of CuO. Nanoparticles with center size of around 5 nm were prepared by ball-milling from single crystals of CuO and investigated using µSR measurements. In the ~5 nm assembly, the TN was reduced drastically to ~30 K, compared with the bulk TN=229 K. A similar effect was observed in a system of 2 to 3 nm diameter nanorods, which was synthesized by a direct solution reaction method, where TN was suppressed further to 13 K. The present work reports direct evidence of a dramatic finite-size effect on the magnetic transition temperature in antiferromagnetic systems.}, pages = {014464-1--014464-8}, title = {Finite-size effect on Néel temperature in antiferromagnetic nanoparticles}, volume = {72}, year = {2005}, yomi = {オタベ, エドモンド ソウジ} }