<div>Dear Users, </div>
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<div>I want to relax (not vc-relax) the combined system of Al2O3 slab with 2 or 3 layers of Ni-atoms on the top of it. Before this combined study, I have successfully relax the Al2O3 slab and Ni layers seperately. When I combine them together, I dont know (in advance) the seperation at which I should keep the Ni layers on the top of Al2O3 slab. So, I keep it ~2 Angs apart and was hoping that with relax, I should get a relaxed geometry. </div>
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<div>The issue I am having is that the electronic relaxation is not converging (1e-8) even after 500 steps (electron_maxstep = 500).</div>
<div> I tried 1000 steps also. It ran through few iterations of atom relaxations but then got crashed after few iterative steps (at a certain step). </div>
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<div>So, I wanted to ask how I can make is equilibrate faster? Would a lower value of conv_thr (1e-4 oe 1e-5) at the initial stages help (to relax atomic coordinates) for frequently. Once, I know the approximate good positions for Ni, atoms, I could increase the conv_thr then. </div>
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<div>Please guide, any other suggestions are also highly welcomed</div>
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<div>Best Regards,</div>
<div>Vikas</div>
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<div>Computational Reseacher, </div>
<div>Wright Patterson Air Force Base, </div>
<div>Dayton, OH.</div>
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