alloy compositions include mn alloys that combine mn with one element selected from ga , in , ni and zn . also included are fe alloys and co alloys in which fe or co are combined with either pt or pd . the alloy compositions form ordered compounds having l1 0 or l1 2 type crystalline structures within specified compositional ranges . in addition , the alloy compositions have low levels of impurities , such as oxygen and sulfur , which provide better performance in magnetic memory applications . the alloy compositions preferably are formed into sputtering targets used for thin film applications .