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

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).

1993 ◽  
Vol 07 (01n03) ◽  
pp. 867-870 ◽  
Author(s):  
H. SHIRAISHI ◽  
T. HORI ◽  
Y. YAMAGUCHI ◽  
S. FUNAHASHI ◽  
K. KANEMATSU

The magnetic susceptibility measurements have been made on antiferromagnetic compounds Mn1–xFexSn2 and the magnetic phase diagram was illustrated. The high temperature magnetic phases I and III, major phases, were analyzed on the basis of molecular field theory and explained the change of magnetic structure I⇌III occured at x≈0.8.


1996 ◽  
Vol 54 (13) ◽  
pp. 9254-9258 ◽  
Author(s):  
C. L. Lin ◽  
T. Yuen ◽  
T. Mihalisin

2018 ◽  
Vol 30 (43) ◽  
pp. 435803 ◽  
Author(s):  
Harikrishnan S Nair ◽  
C M N Kumar ◽  
D T Adroja ◽  
C Ritter ◽  
A S Wills ◽  
...  

1997 ◽  
Vol 55 (18) ◽  
pp. 12363-12374 ◽  
Author(s):  
L. Morellon ◽  
P. A. Algarabel ◽  
M. R. Ibarra ◽  
C. Ritter

2005 ◽  
Vol 17 (10) ◽  
pp. 1547-1560 ◽  
Author(s):  
Thomas Mazet ◽  
Olivier Isnard ◽  
Bernard Malaman

1999 ◽  
Vol 52 (2) ◽  
pp. 255 ◽  
Author(s):  
Yutaka Moritomo

Anisotropic magnetic and transport properties as well as magnetic structures have been investigated for single crystals of bilayer manganites (La1-zNdz)2-2xSr1+2xMn2O7 as a function of doping level x and averaged ionic radius z of the rare-earth ion. We have derived a global magnetic phase diagram as a function of x and z. The ferromagnetic metallic state observed in La1·2Sr1·8Mn2O7 (x = 0· 4 and z = 0· 0) is replaced by a layered antiferromagnetic state beyond x ≥ 0·45. The phase diagram thus obtained is compared with that for the cubic manganites (La1-zNdz)1-xSrxMnO3.


1992 ◽  
Vol 103 (1-2) ◽  
pp. 179-193 ◽  
Author(s):  
J.A. Alonso ◽  
J.X. Boucherle ◽  
J. Rossat-Mignod ◽  
J. Schweizer ◽  
T. Suzuki ◽  
...  

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