scholarly journals Anomalous Structural Change of Layered Perovskite Manganites La2-2x Sr1+2xMn2O7

2009 ◽  
Vol 2 ◽  
pp. 19-24
Author(s):  
Aihua Wang ◽  
Tao Liu ◽  
Yang Liu ◽  
Guohui Cao ◽  
Cheng Dong ◽  
...  
Keyword(s):  
Structural Change ◽  
Layered Perovskite ◽  
Perovskite Manganites

Structural change in a series of protonated layered perovskite compounds, HLnTiO4 (Ln=La, Nd and Y)

2006 ◽  
Vol 179 (6) ◽  
pp. 1892-1897 ◽  
Author(s):  
Shunsuke Nishimoto ◽  
Motohide Matsuda ◽  
Stefanus Harjo ◽  
Akinori Hoshikawa ◽  
Takashi Kamiyama ◽  
...  
Keyword(s):  
Structural Change ◽  
Layered Perovskite

Structural Change of Layered Perovskite La2Ti2O7 at High Pressures.

ChemInform ◽  
2007 ◽  
Vol 38 (51) ◽  
Author(s):  
F. X. Zhang ◽  
J. Lian ◽  
U. Becker ◽  
R. C. Ewing ◽  
L. M. Wang ◽  
...  
Keyword(s):  
Structural Change ◽  
High Pressures ◽  
Layered Perovskite

Magnetic Phase Diagram in Layered Perovskite Manganite La2-2xSr1+2xMn2O7 (0.313≤x≤0.350)

2006 ◽  
Vol 512 ◽  
pp. 183-188 ◽  
Author(s):  
Takeshi Murata ◽  
Tomoyuki Terai ◽  
Takashi Fukuda ◽  
Tomoyuki Kakeshita
Keyword(s):  
Phase Diagram ◽  
Magnetic Structure ◽  
Easy Axis ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
The Other ◽  
Layered Perovskite ◽  
Perovskite Manganites ◽  
Perovskite Manganite ◽  
Magnetic Structures

We have measured the magnetization as a function of temperature and magnetic field in layered perovskite manganites of La2-2xSr1+2xMn2O7 single crystals (x=0.313, 0.315, 0.320, 0.350) in order to know their magnetic structures. All the present manganites exhibit magnetic transitions from ferromagnetic to paramagnetic at 76K, 107K, 120K and 125K for x=0.313, 0.315, 0.320 and 0.350, respectively. For x=0.350 and 0.320, the magnetic structure is a planar ferromagnetism whose easy axis is in the ab-plane at all temperatures below the Curie temperature. On the other hand, for x=0.315 and 0.313, the magnetic structure is an uniaxial ferromagnetism whose easy axis is along the c-axis below 85K and 66K, respectively, and a planar ferromagnetism above the temperature. From the results described above, we made the detailed magnetic phase diagram of layered perovskite manganite La2-2xSr1+2xMn2O7 (0.313≤x≤0.350).

Structural change of layered perovskite La2Ti2O7 at high pressures

2007 ◽  
Vol 180 (2) ◽  
pp. 571-576 ◽  
Author(s):  
F.X. Zhang ◽  
J. Lian ◽  
U. Becker ◽  
R.C. Ewing ◽  
L.M. Wang ◽  
...  
Keyword(s):  
Structural Change ◽  
High Pressures ◽  
Layered Perovskite

scholarly journals Magnetic and transport properties of layered perovskite manganites (La1-xEu x)4/3Sr5/3Mn2O7(x=0, 0.15)

2014 ◽  
Vol 63 (14) ◽  
pp. 147503
Author(s):  
He Li-Min ◽  
Ji Yu ◽  
Lu Yi ◽  
Wu Hong-Ye ◽  
Zhang Xue-Feng ◽  
...  
Keyword(s):  
Transport Properties ◽  
Layered Perovskite ◽  
Perovskite Manganites

scholarly journals Analyses of Superstructure of Layered Perovskite Manganites in Charge/Orbital Ordering State by Low-Temperature TEM

2007 ◽  
Vol 49 (5) ◽  
pp. 300-306
Author(s):  
Xiuzhen YU ◽  
Toru ASAKA ◽  
Toru HARA ◽  
Koji KIMOTO ◽  
Yoshio MATSUI ◽  
...  
Keyword(s):  
Low Temperature ◽  
Layered Perovskite ◽  
Perovskite Manganites ◽  
Orbital Ordering

Structural Change in a Series of Protonated Layered Perovskite Compounds, HLnTiO4 (Ln: La, Nd and Y).

ChemInform ◽  
2006 ◽  
Vol 37 (39) ◽  
Author(s):  
Shunsuke Nishimoto ◽  
Motohide Matsuda ◽  
Stefanus Harjo ◽  
Akinori Hoshikawa ◽  
Takashi Kamiyama ◽  
...  
Keyword(s):  
Structural Change ◽  
Layered Perovskite

OBSERVATION OF HIGH Tc IN THE BILAYERED La2SmxSr1-xMn2O7 PEROVSKITE

2007 ◽  
Vol 21 (23) ◽  
pp. 1569-1577
Author(s):  
M. A. BASITH ◽  
M. SHAHPARAN ◽  
M. HUQ ◽  
S. K. MANJURA HOQUE ◽  
M. A. HAKIM
Keyword(s):  
Large Deviation ◽  
Magnetic Transition ◽  
Layered Perovskite ◽  
Perovskite Manganites ◽  
Solid State Reaction Technique ◽  
Conventional Solid State Reaction ◽  
Metal Insulator ◽  
Magnetic Transition Temperature ◽  
High Tc ◽  
Lower Temperature

Bulk layered perovskite samples La 2 Sm x Sr 1-x Mn 2 O 7 (x = 0.4, 0.6 and 0.8) were prepared by the conventional solid-state reaction technique and their temperature dependence of electrical resistance and magnetization measurements were performed. The metal-insulator (M-I) transition, magnetic phase transition and the colossal magnetoresisitance phenomena were observed. The M-I transition peak temperature (T p ) shifts towards lower temperature with increasing x while magnetic field shifts T p to the high temperature regime. Experimental results show that layered manganites La 2 Sm x Sr 1-x Mn 2 O 7 (x = 0.4, 0.6 and 0.8) exhibit ferromagnetic-to-paramagnetic transitions at Curie temperature T c ~ 355, 286 and 277 K for x = 0.4, 0.6 and 0.8, respectively. A large deviation between the metal-insulator transition and the magnetic transition temperature is observed for all the doping concentrations. But in the case of well-known ABO 3 type perovskite manganites like La 0.75 Ca 0.25 MnO 3, the M-I transition was found previously very close to magnetic transition. At 78 K, a sharp increase of magnetoresistance was observed at low magnetic fields.

scholarly journals High-pressure structural change in the ferroelectric layered perovskite Sr2Nb2O7

2019 ◽  
Vol 100 (5) ◽  
Author(s):  
Javier Alanis ◽  
Hiram Joazet Ojeda-Galván ◽  
M. C. Rodríguez-Aranda ◽  
A. G. Rodríguez ◽  
Harumi Moreno García ◽  
...  
Keyword(s):  
High Pressure ◽  
Structural Change ◽  
Layered Perovskite
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