Anomalous pressure effect on the remanent lattice striction of a „La,Pr...1.2Sr1.8Mn2O7 bilayered manganite single crystal
نویسندگان
چکیده
M. Matsukawa,1,* A. Tamura,1 S. Nimori,2 R. Suryanarayanan,3 T. Kumagai,1 Y. Nakanishi,1 M. Apostu,3 A. Revcolevschi,3 K. Koyama,4 and N. Kobayashi4 1Department of Materials Science and Technology, Iwate University, Morioka 020-8551, Japan 2National Institute for Materials Science, Tsukuba 305-0047, Japan 3Laboratoire de Physico-Chimie de L’Etat Solide, CNRS, UMR8182 Université Paris-Sud, 91405 Orsay, France 4Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan Received 11 September 2006; published 22 January 2007
منابع مشابه
Anisotropic phonon conduction and lattice distortions in colossal-magnetoresistance bilayer manganite „La1ÀzPrz...1.2Sr1.8Mn2O7 „zÄ0, 0.2, 0.4, and 0.6... single crystals
We have undertaken a systematic study of thermal conductivity as a function of temperature and magnetic field of single crystals of the compound (La12zPrz)1.2Sr1.8Mn2O7 for z(Pr)50.2,0.4, and 0.6. The lattice distortion due to Pr substitution and anisotropic thermal conductivity in bilayer manganites are discussed on the basis of different relaxation models of local lattice distortions in metal...
متن کاملN ov 2 00 5 Enhancement of the anomalous Hall effect and spin glass behavior in the bilayered manganite
The Hall resistivity and magnetization have been investigated in the ferromagnetic state of the bilayered manganite La2−2xSr1+2xMn2O7 (x=0.36). The Hall resistivity shows an increase in both the ordinary and anomalous Hall coefficients at low temperatures below 50K, a region in which experimental evidence for the spin glass state has been found in a low magnetic field of 1mT. The origin of the ...
متن کاملPressure-induced colossal piezoresistance effect and the collapse of the polaronic state in the bilayer manganite (La(0.4)Pr(0.6))(1.2)Sr(1.8)Mn2O7.
We have investigated the effect of hydrostatic pressure as a function of temperature on the resistivity of a single crystal of the bilayer manganite (La(0.4)Pr(0.6))(1.2)Sr(1.8)Mn(2)O(7). Whereas a strong insulating behaviour is observed at all temperatures at ambient pressure, a clear transition into a metallic-like behaviour is induced when the sample is subjected to a pressure (P) of ~1.0 GP...
متن کاملAnomalously large anisotropic magnetoresistance in a perovskite manganite.
The signature of correlated electron materials (CEMs) is the coupling between spin, charge, orbital and lattice resulting in exotic functionality. This complexity is directly responsible for their tunability. We demonstrate here that the broken symmetry, through cubic to orthorhombic distortion in the lattice structure in a prototype manganite single crystal, La(0.69)Ca(0.31)MnO(3), leads to an...
متن کاملSquare Lattice Elliptical- Core Photonic Crystal Fiber Soliton-Effect Compressor at 1550nm
In this paper, we investigate the evolution of supercontinuum and femtosecond optical pulses generation through square lattice elliptical-core photonic crystal fiber (PCF) at 1550 nm by using both full-vector multipole method (M.P.M) and novel concrete algorithms: symmetric split-step Fourier (SSF) and fourth order Runge Kutta (RK4) which is an accurate method to solve the general nonlinear...
متن کامل