Zhigao Sheng

Structural, magnetic, and transport properties of the Cu-doped manganite La0.85Te0.15Mn1-xCuxO3 (0≤x≤0.20)

The effect of Cu-doping at Mn-site on structural, magnetic and transport properties in electron-doped manganites La0.85Te0.15Mn1-xCuxO3 has been investigated. Based on the analysis of structural parameter variations, the valence state of the Cu ion in Cu-doped manganites is suggested to be +2. All samples undergo the paramagnetic-ferromagnetic (PM-FM) phase transition. The Curie temperature decreases and the transition becomes broader with increasing Cu-doping level, in contrast, the magnetization magnitude of Cu-doping samples at low temperatures increase as x \leq 0.15. The insulator-metal (I-M) transition moves to lower temperatures with increasing Cu-doping content and disappears as x > 0.1. In addition, the higher temperature resistivity r peak in double-peak-like r(T) curves observed in no Cu-doping sample is completely suppressed as Cu-doping level x = 0.1 and r(T) curve only shows single I-M transition at the low temperature well below . The results are discussed according to the change of magnetic exchange interaction caused by Cu-doping.

The effect of grain size on electrical transport and magnetic properties of La 0.9 Te 0.1 MnO 3.

Abstract The effect of grain size on structural, magnetic and transport properties in electron-doped manganites La0.9Te0.1MnO3 has been investigated. All samples show a rhombohedral structure with the space group R 3 ¯ C at room temperature. The Mn–O–Mn bond angle decreases and the Mn–O bond length increases with the increase of grain size. All samples undergo paramagnetic (PM)-ferromagnetic (FM) phase transitions and the interesting phenomenon that both magnetization and the Curie temperature TC decrease with increasing grain size is observed, which is suggested to mainly originate from the increase of the Mn–O bond length dMn–O. Additionally, ρ obviously increases with decreasing grain size due to the increase of both the height and width of tunneling barriers with decreasing grain size. The results indicate that both the intrinsic colossal magnetoresistance and the extrinsic interfacial magnetoresistance can be effectively tuned in La0.9Te0.1MnO3 by changing grain size.

Structural, magnetic, and transport properties in the Pr -doped manganites La 0.9 − x Pr x Te 0.1 MnO 3 ( 0 ⩽ x ⩽ 0.9 )

The effect of

Change in photovoltage due to an external magnetic field in a manganite-based heterojunction

\mathrm{Pr}

The influence of Cr doping on the charge-ordering state in bilayered LaSr2Mn2O7

-doping on structural, magnetic and transport properties in electron-doped manganites

Magneto-tunable photocurrent in manganite-based heterojunctions

{\mathrm{La}}_{0.9\ensuremath{-}x}{\mathrm{Pr}}_{x}{\mathrm{Te}}_{0.1}{\mathrm{MnO}}_{3}\phantom{\rule{0.3em}{0ex}}(0\ensuremath{\leqslant}x\ensuremath{\leqslant}0.9)

Enhanced low-field magnetization and magnetoresistance in nano-MgO added La2 3Ca1 3MnO3 composites

with fixed carrier concentration is investigated. The room temperature structural transition from rhombohedral

Crossover from negative to positive magnetoresistance in La0.7Ce0.3MnO3-SrTiO3-Nb heterojunctions

(R\overline{3}C)

Fabrication of La0.8Na0.2Mn1−xCuxO3 (x = 0, 0.05) thin films on YSZ substrates via chemical solution deposition

to orthorhombic

Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd 3 As 2

(Pbnm)