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  ____      _____     _____    __   __   _    _   
 |  _ \\   |  ___||  / ____||  \ \\/ // | || | || 
 | |_| ||  | ||__   / //---`'   \ ` //  | || | || 
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 `-` --`   `-----`    `----`     `-`'     `---`

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Text this: High frequency complex permeability of iron particles in a nonmagnetic matrix