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- W1495803670 abstract "The magnetic and electrical transport behaviors of Cr-3(Se1-xTex)(4) compounds are investigated. A transition from antiferromagnetism to ferromagnetism occurs at x = 0.2 in this system and abnormal changes of the lattice parameter alpha and angle beta take place around the magnetic transition point. When Se is partially substituted by T-min a minimum of resistivity (rho(min)) is observed in the temperature dependence of resistivity. The temperature T-min where the minimum rho(min) is, increases with T-min concentration. The minimum in resistivity at T-min is ascribed to the competition between a diminishing resistivity due to domain ordering and a rising resistivity due to disordered frozen spins in each domain. The electrical transport behavior below T-min is described by hopping conductivity in terms of variable range-hopping. An external magnetic field affects strongly the resistivity of the Cr-3(Se1-xTex)(4) compounds, which shifts the magnetic ordering temperature T-MO to higher temperature and T-min to lower temperature. Subsequently, a negative magnetoresistance is found in this system. (c) 2007 Elsevier B.V. All rights reserved." @default.
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- W1495803670 date "2008-01-01" @default.
- W1495803670 modified "2023-09-26" @default.
- W1495803670 title "Magnetic and electrical transport properties of Cr-3(Se1-xTex)(4) compounds" @default.
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