Magnetic Properties and Mossbauer spectroscopy of NdFe1-xMnxO3

被引：14

作者：

Lazurova, J. ^{[1
]}

Mihalik, M. ^{[1
]}

Mihalik, M., Jr. ^{[1
]}

Vavra, M. ^{[1
]}

Zentkova, M. ^{[1
]}

Briancin, J. ^{[2
]}

Perovic, M. ^{[3
]}

Kusigerski, V. ^{[3
]}

Schneeweiss, O. ^{[4
]}

Roupcova, P. ^{[4
]}

Kamenev, K. V. ^{[5
,6
]}

Misek, M. ^{[5
,6
]}

Jaglicic, Z. ^{[7
,8
]}

机构：

[1] SAS, Inst Expt Phys, Kosice, Slovakia

[2] SAS, Inst Geotech, Kosice, Slovakia

[3] Univ Belgrade, Vinca Inst, Belgrade 11001, Serbia

[4] ASCR, Inst Phys Mat, Brno, Czech Republic

[5] Univ Edinburgh, CSEC, Edinburgh, Midlothian, Scotland

[6] Univ Edinburgh, Sch Engn, Edinburgh, Midlothian, Scotland

[7] IMPM, Ljubljana 1000, Slovenia

[8] FGG, Ljubljana 1000, Slovenia

来源：

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014) | 2015年 / 592卷

基金：

英国工程与自然科学研究理事会;

关键词：

NDFEO3; TEMPERATURE;

D O I：

10.1088/1742-6596/592/1/012117

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The effect of particle reduction to nanoscale size and substitution of Mn3+ ions for Fe3+ ions on the crystal structure, lattice dynamics, Mossbauer spectra and magnetic properties in NdFe(1-x)MnxO(3) compounds have been studied. X-ray powder diffraction and Raman spectroscopy revealed that the Jahn-Teller distortion of lattice dominates for samples with x > 0.4. The average particle size of NdFeO3 nanoparticles (NAP) increases with annealing at 600 degrees C from about 15 nm to 25 nm. The presence of superparamagnetic particles was indicated by Mossbauer measurements in NdFeO3 NAP system. Sextets in NdFe(1-x)MnxO(3) Mssbauer spectra can be modelled with several local environments of Fe3+ induced by substitution. The reduction of dimensionality and the substitution induce a decrease of the Neel temperature T-Nl from 691 K to 544 K for NAP or to 356 K for x = 0.4, however the temperature of spin reorientation T-SR increases with substitution. The saturated magnetization obtained at 1.9 K increases and ferromagnetic component is removed below T-SR with the substitution.

引用

页数：6

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