A-site ordered state in manganites with perovskite-like structure based on optimally doped compounds Ln0.70Ba0.30MnO3(Ln=Pr,Nd)

被引：0

作者：

S.V.Trukhanov ^{[1
,2
,3
]}

V.A.Khomchenko ^{[4
]}

D.V.Karpinsky ^{[3
,5
]}

M.V.Silibin ^{[3
,5
,6
]}

A.V.Trukhanov ^{[1
,2
,3
]}

L.S.Lobanovsky ^{[3
]}

H.Szymczak ^{[7
]}

C.E.Botez ^{[8
]}

机构：

[1] National University of Science and Technology MISiS

[2] South Ural State University

[3] Scientific-Practical Materials Research Centre of NASB

[4] CFisUC,Department of Physics,University of Coimbra

[5] National Research University of Electronic Technology "MIET"

[6] Institute for Bionic Technologies and Engineering,I.M.Sechenov First Moscow State Medical University

[7] Institute of Physics,Polish Academy of Sciences

[8] The University of Texas at El Paso

来源：

Journal of Rare Earths | 2019年 / 37卷 / 11期

基金：

欧盟地平线“2020”;

关键词：

Ionic order; Magnetic transition; Perovskite; Manganite; Rare earths;

D O I：

暂无

中图分类号：

O614.331 [];

学科分类号：

070301 ; 081704 ;

摘要：

In this paper,we report on the crystal structure and magnetic properties of the nano structured Baordered phases of rare-earth manganites obtained from the optimally doped solid solutions Ln0.70Ba0.30MnO3(Ln=Pr,Nd).The materials were studied by X-ray diffraction,scanning electron microscopy,energy dispersive spectroscopy and SQUID-magnetometry techniques.It is found that states with different degrees of cation ordering in the A-sublattice of the ABO3perovskite can be obtained by employing special conditions of chemical treatment.In particular,reduction of the parent compounds results in the formation of a nanocomposite containing ferrimagnetic anion-deficient ordered phase LnBaMn2O5.Oxidation of the composite does not change an average size of the nanocrystallites,but drastically alters their phase composition to stabilize ferromagnetic stoichiometric ordered phase LnBaMn2O6and ferromagnetic superstoichiometric disordered phase Ln0.90Ba0.10MnO3+δ.It is shown that the magnetic properties of the materials are determined by the joint action of chemical(cation ordering)and external(surface tension) pressures.

引用

页码：1242 / 1249

页数：8

共 1 条

[1] A-site ordered state in manganites with perovskite-like structure based on optimally doped compounds Ln0.70Ba0.30MnO3 (Ln = Pr, Nd)
Trukhanov, S., V
Khomchenko, V. A.
Karpinsky, D., V
Silibin, M., V
Trukhanov, A., V
Lobanovsky, L. S.
Szymczak, H.
Botez, C. E.
Troyanchuk, I. O.
JOURNAL OF RARE EARTHS, 2019, 37 (11) : 1242 - 1249

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