Magnetic properties of amorphous rare earth-transition metal alloys containing a single magnetic species

Conference · Thu Jan 01 04:00:00 EST 1976 · AIP (Am. Inst. Phys.) Conf. Proc.; (United States)

OSTI ID:7230908

Heiman, N; Lee, K

The analysis of magnetic data on most amorphous rare earth-transition metal binary alloys studied to date is complicated by the fact that both constituents are magnetic. To avoid this problem amorphous films of Gd/sub 1-x/Cu/sub x/, with x = 0.76, 0.82, 0.86 and Lu/1-x/, Fe/sub x/, La/sub 1-x/Fe/sub x/ and Y/sub 1-x/Fe/sub x/ with 0.67 less than x less than 0.85 were studied. The GdCu alloys have T/sub c/ = 53, 40, and 35/sup 0/K implying a Gd-Gd exchange about /sup 1///sub 2/ that of Gd metal. Significant differences between the magnetic properties of LaFe, LuFe, and YFe alloys were observed. LaFe has a well defined T/sub c/ near 275/sup 0/K whereas LuFe and YFe fail to exhibit well defined magnetic transitions. The bulk magnetization and the internal field are considerably higher for LaFe than for LuFe or YFe. These results suggest that the magnetic properties of the Fe depend strongly upon the size of the rare earth atom. This interpretation is supported by results for amorphous Nd-Fe alloys which also have high T/sub c/ and large H/sub INT/ since Nd also has a large atomic size.

• Research Organization: IBM Research Lab., San Jose, CA
• OSTI ID: 7230908
• Conference Information: Journal Name: AIP (Am. Inst. Phys.) Conf. Proc.; (United States) Journal Volume: 34
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
AMORPHOUS STATE
ATOMIC RADII
BINARY ALLOY SYSTEMS
COPPER ALLOYS
GADOLINIUM ALLOYS
INTERMETALLIC COMPOUNDS
IRON ALLOYS
LANTHANUM ALLOYS
LUTETIUM ALLOYS
MAGNETIC PROPERTIES
MAGNETIZATION
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
YTTRIUM ALLOYS