Response to “Comment on ‘Determination of first and second magnetic anisotropy constants of magnetic recording media’ ” [Appl. Phys. Lett. 79, 1733 (2001)]

2001 ◽  
Vol 79 (11) ◽  
pp. 1734-1734 ◽  
Author(s):  
Yasushi Endo ◽  
Osamu Kitakami ◽  
Satoshi Okamoto ◽  
Yataka Shimada
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media

Determination of first and second magnetic anisotropy constants of magnetic recording media

2000 ◽  
Vol 77 (11) ◽  
pp. 1689-1691 ◽  
Author(s):  
Yasushi Endo ◽  
Osamu Kitakami ◽  
Satoshi Okamoto ◽  
Yutaka Shimada
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media

Structure determination of γ-Fe2O3 particles

1986 ◽  
Vol 44 ◽  
pp. 476-477
Author(s):  
Huei-Min Ho ◽  
Gareth Thomas
Keyword(s):  
Magnetic Recording ◽  
Structure Determination ◽  
Spinel Structure ◽  
Unit Cell ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Inverse Spinel ◽  
Inverse Spinel Structure ◽  
Fe Ions

γ-Fe2O3 particles used in magnetic recording media are commonly prepared via the conversion of αFeOOH or γFe2O3 to Fe3O4, followed by oxidation of the Fe3O4 to γ-Fe2O3. Fe3O4 which has a cubic inverse spinel structure converts to γ-Fe2O3 by the removal of 8/3 Fe ions per unit cell. Although γ-Fe2O3 particles have been widely used for several decades, the structure of this material remains unresolved mainly because the techniques involved in previous studies did not have the resolution needed for localized information.

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