Electronic configuration and magnetic properties of La0.7Ca0.3Mn1-xFexO3 perovskite NPs: The effect of a lower Fe3+ concentration

被引：3

作者：

Martinez-Rodriguez, H. A. ^{[1
,2
]}

Onyekachi, Kalu ^{[1
,3
]}

Concha-Balderrama, A. ^{[1
]}

Herrera-Perez, G. ^{[1
]}

Matutes-Aquino, J. A. ^{[1
]}

Jurado, J. F. ^{[2
]}

Bocanegra-Bernal, M. H. ^{[1
]}

Ramos-Sanchez, V. -H. ^{[4
]}

Duarte-Moller, J. A. ^{[5
]}

Reyes-Rojas, A. ^{[1
]}

机构：

[1] Ctr Invest Mat Avanzados SC CIMAV, Lab Nacl Nanotecnol, Miguel de Cervantes 120, Chihuahua, Chihuahua, Mexico

[2] Univ Nacl Colombia, Grp Propiedades Term, Dielect Compositos, Manizales, Colombia

[3] Fed Univ Lafia, Dept Phys, PMB 146, Lafia, Nasarawa State, Nigeria

[4] Univ Autonoma Chihuahua, Fac Ciencias Quim, Nuevo Campus Univ, Chihuahua 31125, Chih, Mexico

[5] Univ DeLaSalle Bajio, Escuela Ingn Civil Mecan & Ind, Leon, Mexico

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 816卷

关键词：

Manganite; FC; ZFC; Jahn-teller distortion; Core-shell NPs; OXYGEN; TEMPERATURE; MAGNETORESISTANCE; STOICHIOMETRY; SPECTROSCOPY; BEHAVIOR; PHASE;

D O I：

10.1016/j.jallcom.2019.152668

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Effect of nanoparticle size on electronic configuration and magnetic properties of La0.7Ca0.3Mn1-xFexO3 (x = 0, 0.005, 0.01, 0.015 and 0.02) perovskites have been investigated. Magnetic properties are dependent on nanoparticle size. It was noted that independently of the 3d(5) ion concentration, if the ABO(3) perovskite solid solution has small enough NPs, they might induce a magnetization mechanism, which is thermally fluctuated, causing magnetic anisotropy of individual grains, and consequently reducing the solid solution's magnetic moment. The 3d(5) ion (Fe3+) concentration with its incomplete d shell plays an important role in the double exchange, DE. Subsequently, NPs around 28 nm are strongly influenced at 100 K by a paramagnetic to ferromagnetic transition, which presents a spin glass-type order as the temperature continues to decrease. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：9

共 54 条

[1]

Abrashev MV, 1999, PHYS STATUS SOLIDI B, V215, P631, DOI 10.1002/(SICI)1521-3951(199909)215:1<631::AID-PSSB631>3.0.CO

[2]

2-S

[3] Magnetic properties and colossal magnetoresistance of La(Ca)MnO3 materials doped with Fe [J].

Ahn, KH ;

Wu, XW ;

Liu, K ;

Chien, CL .

PHYSICAL REVIEW B, 1996, 54 (21) :15299-15302

[4] Paramagnetic spin dynamics in the nonhomogeneous crystals of low-doped lanthanum manganites [J].

Auslender, M. ;

Shames, A. I. ;

Rozenberg, E. ;

Gorodetsky, G. ;

Mukovskii, Ya. M. .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)

[5] Analysis of the electronic configuration of the pulsed laser deposited La0.7Ca0.3MnO3 thin films [J].

Borca, C. N. ;

Canulescu, S. ;

Loviat, F. ;

Lippert, T. ;

Grolimund, D. ;

Doebeli, M. ;

Wambach, J. ;

Wokaun, A. .

APPLIED SURFACE SCIENCE, 2007, 254 (04) :1352-1355

[6] Interaction of oxygen and carbon monoxide with CsAu surfaces [J].

Carley, AF ;

Roberts, MW ;

Santra, AK .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (48) :9978-9983

[7] Near-Room-Temperature Colossal Magnetodielectricity and Multiglass Properties in Partially Disordered La2NiMnO6 [J].

Choudhury, D. ;

Mandal, P. ;

Mathieu, R. ;

Hazarika, A. ;

Rajan, S. ;

Sundaresan, A. ;

Waghmare, U. V. ;

Knut, R. ;

Karis, O. ;

Nordblad, P. ;

Sarma, D. D. .

PHYSICAL REVIEW LETTERS, 2012, 108 (12)

[8] Magnetic dead layer in ferromagnetic manganite nanoparticles [J].

Curiale, J. ;

Granada, M. ;

Troiani, H. E. ;

Sanchez, R. D. ;

Leyva, A. G. ;

Levy, P. ;

Samwer, K. .

APPLIED PHYSICS LETTERS, 2009, 95 (04)

[9] Magnetic field induced low temperature upturn of magnetization in highly Ca-doped La0.1875Ca0.8125MnO3 polycrystalline compound [J].

Das, Kalipada ;

Dasgupta, P. ;

Poddar, A. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2017, 432 :425-429

[10] Thermoremanence and zero-field-cooled/field-cooled magnetization study of Cox(SiO2)1-x granular films -: art. no. 064422 [J].

Denardin, JC ;

Brandl, AL ;

Knobel, M ;

Panissod, P ;

Pakhomov, AB ;

Liu, H ;

Zhang, XX .

PHYSICAL REVIEW B, 2002, 65 (06) :1-8

← 1 2 3 4 5 6 →