Text this: Preparation of ferrimagnetic BF based silicate glass system

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