Where can I buy artificial brick for wall behind a range

Chalky, its really easy finding artificial brick, just Google 'artificial brick' and you will have a world of choices. Or, you will have to buy it anyway, so go to your local building supply store... Home Depot, etc.
Tick

If u have a place in your area that sells or specializes in fireplaces, they will have a large variety of brick veneer that can be used as back splash for stove.

Good luck

Chuck

I'd stick with lumber yards and box stores for veneer brick. You may want to consider sealing the stuff after it has cured to yyou can wash it. You can also see it online Cultured Stone® - Stone Veneer and Brick Veneer