An yttrium iron garnet is a synthetic material used for its magnetic properties.

Chromium(IV) oxide, Cobalt, Dysprosium, Gadolinium, Gallium manganese arsenide, Iron, Magnetite, Nickel, Permalloy, Suessite, Yttrium iron garnet.

Noor Baa'yah Ibrahim has written:

'Properties of yttrium iron garnet thin films grown by pulsed laser ablation deposition'

YAG stands for yttrium aluminum garnet, the name of the laser used for this procedure.

YAG is another term for yttrium aluminium garnet, a synthetic material used in lasers and formerly as an artificial gemstone.