Text this: Micromagnetics of derivative ring-shaped nanomagnets

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