Topics

1

General Questions and Answers / Regarding replacement of atoms of one element by another element

« on: September 30, 2013, 08:25 »

Dear Sir,

I am working with magnetic tunnel junction builder (Fe/MgO/Fe). As per my design requirement, I have to replace the oxygen atoms in the central region with Magnesium atoms manually to make the central region be made up of Magnesium alone. Can you please help me in identifying how to replace one atom by another? Appreciate your help.

Regards,
Mayank Chakraverty.

2

General Questions and Answers / query regarding bandstructure simulation

« on: March 11, 2011, 21:00 »

By using the magnetic tunnel junction builder, i have made a Ni/Al2O3/Ni tunnel junction. There are two cases. As the two Fe layers can have either parallel spin or anti parallel spin alignment, I have simulated Ni(up spin)/Al2O3/Ni(up spin) and then Ni(up spin)/Al2O3/Ni(down spin) separately. I have obtained two separate band structures for the two sets of simulations. How do I identify in the band structure obtained that which region is for Ni(up spin), which region is for Al2O3 and which region is for Ni(up spin)/Ni(down spin)..??

3

General Questions and Answers / query regarding MTJ (magnetic tunnel junction)

« on: March 11, 2011, 20:40 »

In the magneto tunnel junction builder, there is an option to specify the layer separation of the barrier (central region). How do we set the layer separation value..?? On what grounds do we set the value of layer separation for any material..?? Also, there is an option to select the electrode/oxygen distance. How do we know what values will be most apt..?? Kindly let me know..