Comment on "Magnetoresistance and phase composition of La-Sn-Mn-O systems"

被引：14

作者：

Caneiro, A ^{[1
]}

Morales, L

Prado, F

Lamas, DG

Sanchez, RD

Serquis, A

机构：

[1] Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 Bariloche, Rio Negro, Argentina

[2] Inst Balseiro, RA-8400 Bariloche, Rio Negro, Argentina

[3] CONICET, Argentine Natl Res Council, Bariloche, Rio Negro, Argentina

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.62.6825

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In a published paper by Li et al. [Phys. Rev. B 60, 10284 (1999)] the transport properties and phase composition of the manganites La1-xSnxTMnO3+delta (x = 0.1-0.5) are studied: The authors analyze their results assuming the existence of two phases: a perovskite LaMnO3+delta and a pyrochlore (La0.5Sn0.5)(2)Mn2O7. We consider that they misinterpret the x-ray diffraction data and we conclude that the manganites La1-xSnxMnO3+delta are in fact a multiphase material composed by LaMnO3+delta, La2Sn2O7, Mn3O4 and SnO2. The magnetic transition observed by Mossbauer experiments around 65 K attributed by Li et nl. to that of the (La0.5Sn0.5)(2)Mn2O7 pyrochlore phase would correspond to that of the paramagnetic-ferrimagnetic one of Fe-doped Mn3O4.

引用

页码：6825 / 6826

页数：2

共 9 条

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