Magnetic properties of RMn/sub 2/X/sub 2/ compounds (R=rare earth, Y or Th and X=Ge, Si)

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

OSTI ID:7359082

Narasimhan, K S.V.L. ^[1]; Rao, V U.S.; Wallace, W E; Pop, I

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1. Univ. of Pittsburgh

Magnetic properties of RMn/sub 2/Ge/sub 2/ and RMn/sub 2/Si/sub 2/ compounds crystallizing in the BaAl/sub 4/ type structure were investigated over a wide temperature range (4.2/sup 0/K to 1200/sup 0/K). LaMn/sub 2/Ge/sub 2/, CeMn/sub 2/Ge/sub 2/, PrMn/sub 2/Ge/sub 2/, NdMn/sub 2/Ge/sub 2/ and LaMn/sub 2/Si/sub 2/ all possess Curie temperatures above 300/sup 0/K and the easy direction of magnetization have been found to be along the c-axis. When R is a heavy rare earth antiferromagnetic coupling was obtained at 4.2/sup 0/K between the rare earth and manganese moments whereas when R is a light rare earth a ferromagnetic coupling of moments was obtained. YMn/sub 2/Si/sub 2/, ThMn/sub 2/Si/sub 2/, and ThMn/sub 2/Ge/sub 2/ possess a small moment less than .2..mu../sub B/ at 4.2/sup 0/K. High temperature susceptibilities on RMn/sub 2/Si/sub 2/ compounds indicate a Curie--Weiss behavior.

• OSTI ID: 7359082
• Conference Information: Journal Name: AIP (Am. Inst. Phys.) Conf. Proc.; (United States) Journal Volume: 29
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE ALLOYS
ALLOYS
ANTIFERROMAGNETISM
CURIE POINT
FERROMAGNETISM
GERMANIUM ALLOYS
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MAGNETIZATION
MANGANESE ALLOYS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SILICON ALLOYS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THORIUM ALLOYS
TRANSITION TEMPERATURE
YTTRIUM ALLOYS