there are provided a thermal barrier coating material and a thermal barrier coating member that can suppress spalling when used at a high temperature and have a high thermal barrier effect , a method for producing the same , a turbine member coated with a thermal barrier coating , and a gas turbine . the thermal barrier coating member comprises a heat resistant substrate , a bond coat layer formed thereon , and a ceramic layer formed further thereon , wherein the ceramic layer comprises an oxide which consists of an oxide represented by the general formula a 2 zr 2 o 7 doped with a predetermined amount of cao or mgo and has 10 volume % or more of a pyrochlore type crystal structure , where a represents any of la , nd , sm , gd , and dy .