1. 1) Information of some of major research projects on permanent magnets can be found in the following URLs: ARPA-E REACT (http://arpa-e.energy.gov/?q=projects/view-programs), G8 Research Councils HPPMN (http://www.jsps.go.jp/j-bottom/data/g8/011.pdf), DOE Critical Materials Institute (http://www1.eere.energy.gov/manufacturing/rd/critic al_materials_hub.html), FP7-NMP ROMEO (http://cordis.europa.eu/projects/rcn/105901_en.html), REFREEPERMAG (http://refreepermag-fp7.eu/project/who-we-are/#), JST-CREST (http://www.element.jst.go.jp/en/researchers/index.html#cont03 and http://www.element.jst.go.jp/en/researchers/researchers23.html#cont04), JST- Collaborative Research Based on Industrial Demand (http://www.jst.go.jp/tt/EN/platform/kyousou.html), MEXT-Elements Strategy Initiative (http://www.nims.go.jp/research/ESICMM/index_e.ht ml), MagHEM (http://www.maghem.jp/english/index.html).
2. 2) J.M.D. Coey, Scripta Mater. 67, 524 (2012).
3. 3) H. Nakamura, K. Hirota, M. Shimao, T. Minowa, and M. Honshima, IEEE Trans. Magn. 41, 3844 (2005).
4. 4) K. Hirota, H. Nakamura, M. Shimao, T. Minowa, and M. Honshima, IEEE Trans. Magn. 42, 2909 (2006).
5. 5) H. Nakamura, K. Hirota, M. Shimao, T. Minowa and M. Honshima, IEEE Trans. Magn. 41, 3844 (2006).