A is at least one kind of element selected from the group consisting of Al and Ga, the element D is Si and Ge, and the element Z is {HEAD ~ at least one kind} of {TAIL ~ element} selected from the rare earth elements and the transitional metal elements 
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A is at least one kind of element selected from the group consisting of Al and Ga , the element D is Si and Ge , and the element Z is { HEAD ~ at least one kind } of { TAIL ~ element } selected from the rare earth elements and the transitional metal elements
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH