I want to make slab of two structures having same lattice constant to avoid lattice mismatch. How to make a single structure putting two structures together , one slab above another using octave?
You can simply do this with Vesta. Just run Vesta and follow this File-->New structure
Then go to "Structure parameters" tab and click on import and select your first structure. After that go to "phase" tab and click on new then again go to "Structure parameters" tab and click on import and select your second structure. You should keep in mind that when you want to import second structure you must change some parameter (depending on the space group) to avoid getting wrong result.
You can download Vesta for your operating system from here: