أرسل هذا في رسالة قصيرة: Superparamagnetic and ferromagnetic behavior of ZnFe<inf>2</inf>O<inf>4</inf> nanoparticles synthesized by microwave-assisted hydrothermal method

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