Concentration dependence of the exchange interaction in Pb{sub 1{minus}x}Eu{sub x}Te

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.4400· OSTI ID:450424

Gorska, M ^[1]; Anderson, J R ^[2]; Peng, J L ^[3]; Oka, Y; Y-Jen, J ^[4]; Mogi, I ^[5]; Ravot, D ^[6]

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1. Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw (Poland)
2. Joint Program on Advanced Electronic Materials, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
3. Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
4. Research Institute for Scientific Measurements, Tohoku University, Sendai 980 (Japan)
5. Institute for Materials Research, Tohoku University, Sendai 980 (Japan)
6. Laboratoire de Chimie Metallurgique des Terres Rares, C.N.R.S., 1 place Aristide Briand, 92195 Meudon Cedex (France)

From low-field measurements of the susceptibility at temperatures up to 385 K, fitted to the Curie-Weiss expression, the exchange constant J/k{sub B} of Pb{sub 1{minus}x}Eu{sub x}Te has been obtained for different values of x. It has been observed that J/k{sub B} decreases with increasing x. Reasons for this decrease are proposed. Measurements of the low-temperature magnetization at fields up to 23 T yield a value of the pair exchange constant J{sub p}/k{sub B}, which is somewhat larger than the values from the susceptibility measurements and is nearly independent of x. This result seems to be due to the clustering of Eu atoms. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 450424
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 7 Vol. 55; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMIC CLUSTERS
CHEMICAL COMPOSITION
CRYSTAL STRUCTURE
CURIE-WEISS LAW
DOPED MATERIALS
EUROPIUM TELLURIDES
EXCHANGE INTERACTIONS
LEAD TELLURIDES
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
X-RAY DIFFRACTION