REFERENCES
- B. WILSON: Philos. Trans., 1779, 69, 51.
- Y. KATO and T. TAKEI: J. Inst. Electrical Engrs., 1933, 53, 408.
- G. H. HOWE: Iron Age, 1940, 145 (2), 27.
- Société d'Electro chemie, d'Electrométallurgie, et des Acieres Electriques d'Ugine, British Patent 590392.
- L. I. MENDELSOHN, F. E. LUBORSKY, and T. O. PAINE: J. Appl. Phys., 1955, 25, 1275.
- V. ADELSKÖLD: Arkiv for Kemi, Mineralogi och Geologi, 1933, 12A, No.29.
- M. ERCHAK, I. FANKUCHEN, and R. J. WARD: Am. Chem. Soc., 1946, 68, 2085.
- J. L. SNOEK: ‘New developments in ferromagnetic materials’, 1947: London, New York, Amsterdam (Elsevier).
- Philips Electrical Industries Limited: British Patent App. 78127 (1959).
- T. T. WENT, G. W. RATHENAU, E. W. GORIER, and G. W. VAN OOS-TERHOUT: `Ferroxdure, a class of new permanent magnet mat-erials', Philips Tech. Rev., 1952, 13, 194.
- A. L. STUIJTS, G. W. RATHENAU, and G. H. WEBER: ibid., 1954, 16, 141.
- A. B. VAN GROENOU: Digest of Intermag. Conf., London, April, 1975.
- A. W. COCHARDT: US Patent App. 3113927, 1963.
- E. STEINORT: I.O.S. Colloquium, Varese, 1973.
- K. J. SIXTUS, K. J. KRONENBERG, and R. K. TENZER: J. Appl. Phys., 1957, 27, 51.
- General Motors Corporation: British Patent App. 1317254 (1970).
- E. A. NESBITT, and J. H. WERWICK: ‘Rare earth permanent mag-nets’, 1973: New York (Academic Press).
- W. M. HUBBARD, E. ADAMS, and J. V. GILFRICH: J. Appl. Phys. Suppl., 1960, 31, 368S.
- K. J. STRNIAT and G. HOFFER: USAF Materials Lab. Rep., AFML TR-65-446, 1966.
- c. HERGET and R-C. DOMAZER: Goldschmidt Informiert, 1975, 3 (35), 4.