La0.95A0.05MnO3 (where A=Na, Sr, Er, Dy and Ce) powder samples were synthesized by chemical solution route and the magnetic and structural properties are reported in this paper. The pervoskite structure was confirmed from X-ray diffraction patterns and Raman spectra at room temperature in all of these doped samples. Curie transition temperatures in doped LaMnO3 bulk samples were around 250K, which are much higher than the ideal value (∼140 K) in undoped samples. The increase in the magnetic transition temperatures can be related to non-stoichiometry and cation vacancies created due to higher valence substitutions for the univalent La1+ ions.

1.
S.
Jin
,
T. H.
Tiefel
,
M.
McCormack
,
R. A.
Fastnacht
,
R.
Ramesh
, and
L. H.
Chen
,
Science
264
,
413
(
1994
).
2.
Y.
Tokura
,
Y.
Tomioka
,
H.
Kuwahara
,
A.
Asamitsu
,
Y.
Moritomo
, and
M.
Kasai
,
J. Appl. Phys.
79
,
5288
(
1996
).
3.
A.J.
Mills
,
Nature
392
147
(
1998
).
4.
K.
De
,
R.
Ray
,
R.N.
Panda
,
S.
Giri
,
H.
Nakamura
,
T.
Kohara
,
J. Magn. Magn. Mater.
288
339
(
2005
).
5.
P. K.
Siwach
,
H. K.
Singh
and
O. N.
Srivastava
,
J. Phy: Condens. Matter
20
,
273201
(
2008
).
6.
N. N.
Loshkareva
and
E. V.
Mostovshchikova
,
The Physics of Metals and Metallography
,
113
,
19
38
(
2012
).
7.
Ping
Duan
,
Zhenghao
Chen
,
Shouyu
Dai
,
Yueliang
Zhou
,
Huibin
Lu
 et al,
Applied Physics Letters
,
84
,
4741
(
2004
).
8.
De Silva
,
P. S. I. P. N.
;
Richards
,
F. M.
;
Cohen
,
L. F.
;
Alonso
,
J. A.
;Martinez-Lope
,
M. J.
;
Casais
,
M. T.
;
Thomas
,
K. A.
;
MacManus-Driscoll
,
J. L.
J. Appl. Phys.
83
,
394
(
1998
).
9.
Ghivelder
,
L.
;
Abrego-Castillo
,
I.
;
Gusmão
,
M. A.
;
Alonso
,
J.A.
;
Cohen
,
L. F.
Phys. Rev. B
60
,
12184
(
1999
).
10.
A.
Hagaza
,
N.
Kallel
,
S.
Kallel
,
T.
Guizouarn
,
O.
Pena
, and
M.
Oumezzine
,
Journal of Alloy and Compounds
486
,
250
256
(
2009
).
11.
D.
Varshney
,
N.
Dodiya
,
M. W.
Shaikh
,
Journal of Alloys and Compounds
,
509
,
7447
7457
(
2011
).
12.
K.
De
,
S.
Das
,
A.
Roy
,
P.
Dhak
,
M.
Willinger
,
J. S.
Amaral
,
V. S.
Amaral
,
S.
Giri
,
S.
Majumder
,
C. J. R.
Silva
,
M. J. M.
Gomes
, and
P. K.
Mahapatra
,
Journal of Applied Physics
112
,
103907
(
2012
).
13.
Hao
Liu
,
Hongguang
Zhang
,
Yongtao
Li
,
Yuanyuan
Chen
,
Lingshan
Chen
,
Xueguang
Dong
,
Kai
Chen
,
Qi
Li
,
J Supercond Nov Magn
,
25
,
1049
1054
(
2012
).
14.
S.
Husain
,
R. J.
Chaudhary
,
R.
Kumar
,
S. I.
Patil
,
J. P.
Srivastava
,
Pranama
,
58
,
1045
1059
(
2002
).
15.
J. R.
Gebhardt
,
S.
Roy
, and
N.
Ali
,
Journal of Applied Physics
85
,
5390
(
1999
).
16.
C.
Krishnamoorthy
,
K.
Sethupathi
,
V.
Sankaranarayanan
,
R.
Nirmala
,
S.K.
Malik
,
J Alloys Compd
,
438
,
1
7
(
2007
).
17.
Z.
Brankovic
,
K.
Duris
,
A.
Radojkovic
,
S.
Bernik
,
Z.
Jaglicic
,
M.
Jagodic
,
K.
Vojisavljevic
,
G.
Brankovic
,
J Sol-Gel Sci Technol
,
55
,
311
316
, (
2010
).
18.
Hao
Liu
,
Hongguang
Zhang
,
Yongtao
Li
,
Yuanyuan
Chen
,
Lingshan
Chen
,
Xueguang
Dong
,
Kai
Chen
,
Qi
Li
,
J Supercond Nov Magn
,
10948-011
1348-5
(
2011
).
19.
C.
Ritter
,
M.R.
Ibarra
,
J.M.
De Teresa
,
P.A.
Algarabel
,
C.
Marquina
,
J.
Blasco
,
J.
García
,
S.
Oseroff
,
S.-W.
Cheong
,
PhysRev B
,
56
,
8902
8911
(
1997
).
20.
Z.M.
Wang
,
G.
Ni
,
H.
Sanga
,
Y.W.
Du
,
Journal of Magnetism and Magnetic Materials
,
234
,
213
217
(
2001
).
21.
Mixed-valence
manganites
,
J. M. D.
Coey
,
M.
Viret
and
S.
von Molnar
,
Advances in Physics
,
48
,
167
293
, (
1999
).
22.
S. L.
Ye
,
W. H.
Song
,
J. M.
Dai
,
S. G.
Wang
,
K. Y.
Wang
,
C. L.
Yuan
, and
Y. P.
Sun
,
J. Appl. Phys.
88
,
5915
(
2000
).
23.
S. L.
Ye
,
W. H.
Song
,
J. M.
Dai
,
K. Y.
Wang
,
S. G.
Wang
 et al,
J. Appl. Phys.
90
,
2943
(
2001
).
This content is only available via PDF.
You do not currently have access to this content.