Magnetic and transport properties of colossal magnetoresistance compound EuB{sub 6}

Journal Article · Sun Jul 15 00:00:00 EDT 2007 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776107070278· OSTI ID:21075796

Bogach, A V; Gon'kov, K V; Demishev, S V; Ivanov, V Yu ^[1]; Kuznetsov, A V ^[2]; Samarin, N A ^[1]; Shitsevalova, N Yu ^[3]; Flachbart, K ^[4]; Sluchanko, N E ^[1]

---

1. Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)
2. Moscow Institute of Engineering Physics (Russian Federation)
3. National Academy of Sciences of Ukraine, Institute for Problems in Materials Science (Ukraine)
4. IEP SAS and IPS FS UPJS, Centre of Low Temperature Physics (Slovakia)

The galvanomagnetic and magnetic properties of EuB{sub 6} single crystal have been measured over wide temperature (1.8-300 K) and magnetic-field (up to 70 kOe) ranges, and the parameters of charge carriers and the characteristics of the magnetic subsystem are estimated in the paramagnetic and ferromagnetic (T < T{sub C} {approx} 13.9 K) phases of this compound with strong electron correlations. In the temperature range T < T* {approx} 80 K, a magnetoresistance hysteresis {delta}{rho}(H)/{rho}(0) is detected; it reaches a maximum amplitude of about 5% at T {approx} 12 K. The anomalies of charge transport observed in the temperature range T{sub C} < T < T* are shown to be related to the magnetic scattering of charge carriers (m{sub eff} = (15-30)m{sub 0}, where m{sub 0} is the free-electron mass) that results from a short-range magnetic order appearing upon the formation of ferromagnetic nanoregions (ferrons)

• OSTI ID: 21075796
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 105, Issue 1; Other Information: DOI: 10.1134/S1063776107070278; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMPLITUDES
CHARGE CARRIERS
CHARGE TRANSPORT
ELECTRON CORRELATION
ELECTRONS
EUROPIUM BORIDES
FERRON
HYSTERESIS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETORESISTANCE
MONOCRYSTALS
PARAMAGNETISM
SCATTERING
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K