A method comprising: disposing in a mold a powder that has a composition for manufacturing a scintillator material; and compressing the powder to form the scintillator material; where an exit surface of the scintillator material has a texture that comprises a plurality of projections that reduce total internal reflection at the exit surface and that increase the amount of photons exiting the exit surface by an amount greater than or equal to 5% over a surface that does not have the projections, where the scintillator material has a composition of formula, M 1 a M 2 b M 3 c M 4 d O 12 where O represents oxygen, M 1, M 2, M 3, and M 4 represents a first, second, third and fourth metal that are different from each other, the sum of a + b + c+ d is 8, where "a" has a value of 2 to 3.5, "b" has a value of 0 to 5, "c" has a value of 0 to 5, "d" has a value of 0 to 1, where "b" and "c", "b" and "d" or "c" and "d" cannot both be equal to zero simultaneously, M 1 is. rare earth element including but not being limited to gadolinium, yttrium, lutetium, scandium, or a combination of thereof, M 2 is aluminum or boron, M 3 is gallium, and M 4 is a codopant and comprises one of thallium, copper, silver, lead, bismuth, indium, tin, antimony, tantalum, tungsten, strontium, barium, boron, magnesium, calcium, cerium, yttrium, scandium, lanthanum, lutetium, praseodymium, terbium, ytterbium, samarium, europium, holmium, dysprosium, erbium, thulium or neodymium, where the projections include outward projections, inward projections or a combination thereof, where the projections comprise geometrical objects that have a side that is inclined to the exit surface at an angle of 30 to 60 degrees, where the geometrical objects have at least one dimension that is 50 to 700 nanometers in size and/or where the geometrical objects are pyramids, cones, hemispheres, ellipsoids, truncated pyramids, fullerenes, truncated cones, truncated hemispheres, truncated ellipsoids, truncated spheres, truncated fullerenes, or a combination thereof, where a periodicity between geometrical objects is 300 nanometers to 1000 micrometers, where compressing the powder includes uniaxial compression or isostatic compression. disposing in a mold a powder that has a composition for manufacturing a scintillator material; and compressing the powder to form the scintillator material; where an exit surface of the scintillator material has a texture that comprises a plurality of projections that reduce total internal reflection at the exit surface and that increase the amount of photons exiting the exit surface by an amount greater than or equal to 5% over a surface that does not have the projections, where the scintillator material has a composition of formula, M 1 a M 2 b M 3 c M 4 d O 12 where O represents oxygen, M 1, M 2, M 3, and M 4 represents a first, second, third and fourth metal that are different from each other, the sum of a + b + c+ d is 8, where "a" has a value of 2 to 3.5, "b" has a value of 0 to 5, "c" has a value of 0 to 5, "d" has a value of 0 to 1, where "b" and "c", "b" and "d" or "c" and "d" cannot both be equal to zero simultaneously, M 1 is. rare earth element including but not being limited to gadolinium, yttrium, lutetium, scandium, or a combination of thereof, M 2 is aluminum or boron, M 3 is gallium, and O represents oxygen, M 1, M 2, M 3, and M 4 represents a first, second, third and fourth metal that are different from each other, the sum of a + b + c+ d is 8, where "a" has a value of 2 to 3.5, "b" has a value of 0 to 5, "c" has a value of 0 to 5, "d" has a value of 0 to 1, where "b" and "c", "b" and "d" or "c" and "d" cannot both be equal to zero simultaneously, M 1 is. rare earth element including but not being limited to gadolinium, yttrium, lutetium, scandium, or a combination of thereof, M 2 is aluminum or boron, M 3 is gallium, and "a" has a value of 2 to 3.5, "b" has a value of 0 to 5, "c" has a value of 0 to 5, "d" has a value of 0 to 1, where "b" and "c", "b" and "d" or "c" and "d" cannot both be equal to zero simultaneously, M 1 is. rare earth element including but not being limited to gadolinium, yttrium, lutetium, scandium, or a combination of thereof, M 2 is aluminum or boron, M 3 is gallium, and