Unformatted text preview: (nano meter scale) Especially for MTJ, the thickness of
insulator should be thin enough to allow tunneling current to happen. (hundreds angstrom to few nano
2 As nano-particles become smaller, you can achieve higher storage capacity (bit / in2). However if nanoparticle is smaller than certain range, magnetization can flip randomly, or superparamagnetism, which is
not desirable for hard drive (As particle become smaller, delta E (=KuV) approaches kT, it starts to
become randomized). S...
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- Fall '13
- Magnetism, Magnetic Field, Hysteresis, Ferromagnetism, MTJ, ferromagnetic layers