Results 71 to 80 of about 970 (185)

Structural, magnetic states and pressure-induced phenomena in complex nanosized magnetic oxides

Natural Science Review
The results of the recent investigations of the crystal and magnetic structure of complex nanosized manganese and iron oxides using neutron diffraction, X-ray diffraction and other techniques over a wide range of thermodynamic parameters (temperature ...
D. P. Kozlenko, N. M. Belozerova, S. E. Kichanov, E. V. Lukin, O. N. Lis, A. V. Rutkauskas, B. N. Savenko, Z. Jirák, G. S. Rymski, A. L. Zhaludkevich, N. T. Dang   +10 more
doaj   +1 more source

Surface spin glass and exchange bias effect in Sm0.5Ca0.5MnO3 manganites nano particles

AIP Advances, 2011
In this letter, we report that the charge/orbital order state of bulk antiferromagnetic Sm0.5Ca0.5MnO3 is suppressed and confirms the appearance of weak ferromagnetism below 65 K followed by a low temperature spin glass like transition at 41 K in its ...
S. K. Giri, A. Poddar, T. K. Nath
doaj   +1 more source

Crystalline structure of the manganites solid solution RE(Me,Mn)O₃, (RE=Gd,Er; Me=Ni,Co)

Boletín de la Sociedad Española de Cerámica y Vidrio, 2009
The structural properties of the manganites solid solution RE(Me,Mn)O₃, RE=Er,Gd, have been studied by X-ray diffraction and electric measurements.
Peña, O., Moure, A., Moure, C., Tartaj, J.   +3 more
doaj  

Structural and electromagnetic characteristics of perovskites in La1–c–xSrc+xMn1–xMe4+xO3 systems (Me=Ge, Ti)

EPJ Web of Conferences, 2013
Experimental data are shown for the influence of substituting quadrivalent ions on the concentration phase transitions “rhombohedral-orthorhombic structure” and “semiconductor-metal” in ceramic manganites of specifically designed system La3+1–c–xSr2+c ...
Karpasyuk V., Estemirova S., Epifanova I., Datskaya Z., Badelin A., Smirnov A.   +5 more
doaj   +1 more source

Magnetorresistência colossal em La5/8-yPr yCa3/8MnO3 Magnetoresistance in La5/8-yPr yCa3/8MnO3

Cerâmica, 2007
Amostras policristalinas de La5/8-yPr yCa3/8MnO3, 0 0,35) revelam um efeito de magnetorresistência colossal amplificado devido à coexistência e competição das FMM e OCI cujas frações volumétricas podem ser alteradas via mudança da temperatura e ...
S. H. Masunaga, R. F. Jardim
doaj   +1 more source

Electric-pulse-induced resistance switching effect in the bulk of La0.5Ca0.5MnO3 ceramics

AIP Advances, 2014
In the majority of contributions, the electrical–pulse-induced resistance (EPIR) switching effect of perovskite manganites is thought to originate from the extrinsic interfacial Schottky barrier between the metal electrode and the surface of sample.
M. L. Wu, C. P. Yang, D. W. Shi, R. L. Wang, L. F. Xu, H. B. Xiao, K. Baerner   +6 more
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Critical Behavior of La0.8Ca0.2Mn1−xCoxO3 Perovskite (0.1 ≤ x ≤ 0.3)

Magnetochemistry, 2017
The critical properties of La0.8Ca0.2Mn1−xCoxO3 (x = 0, 0.1, 0.2 and 0.3) compounds were investigated by analysis of the magnetic measurements in the vicinity of their critical temperature. Arrott plots revealed that the paramagnetic PM-ferromagnetic (FM)
Dorra Turki, Zafar Khan Ghouri, Saeed Al-Meer, Khaled Elsaid, M. I. Ahmad, Ahmed Easa, Gyorgy Remenyi, Sami Mahmood, El Kebir Hlil, Mohamed Ellouze, Foued Elhalouani   +10 more
doaj   +1 more source

Controllable magnetization and resistivity jumps of manganite thin films on BaTiO3 substrate

AIP Advances, 2015
Manganites thin films grown on ferroelectric BaTiO3 (BTO) exhibit dramatic jumps for both magnetization and resistivity upon cooling in accordance with the temperature-dependent structural transitions of the BTO substrate.
Wengang Wei, Jinjie Chen, Kai Zhang, Yunfang Kou, Kai Du, Yinyan Zhu, Wenbin Wang, Xiaolong Li, Xingmin Zhang, Xingyu Gao, Lei Zhang, Mingliang Tian, Denglu Hou, Lifeng Yin, Jian Shen   +14 more
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Enhancement of temperature coefficient of resistance (TCR) and magnetoresistance (MR) of La0.67–xRExCa0.33MnO3 (x = 0, 0.1; RE = Gd, Nd, Sm) system via rare-earth substitution

Materials Research Express, 2020
We investigated the influence of 10% substitution of rare-earth (RE) elements on the crystallographic, transport, and magnetic properties of La _0.67– _x RE _x Ca _0.33 MnO _3 (RE = Nd, Sm, and Gd, x  = 0.0, 0.1) manganite perovskite compounds.
Anand Pal, B S Nagaraja, K J Rachana, K V Supriya, Dhananjaya Kekuda, Ashok Rao, Chia-Ruei Li, Yung-Kang Kuo   +7 more
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Giant dielectric permittivity and magneto-capacitance effects in low doped manganites

New Journal of Physics, 2014
The effect of giant dielectric permittivity due to phase separation accompanied by charged inhomogeneities in low-doped manganites is discussed. The effect appears in the vicinity of the second-order magnetic phase transition and is caused by long-range ...
R F Mamin, V V Kabanov
doaj   +1 more source