Lattice deformation and magnetic properties in epitaxial thin films of Sr1-xBaxRuO3

1997 ◽  
Vol 494 ◽  
Author(s):  
Noburu Fukushima ◽  
Kenya Sano ◽  
Tatsuo Schimizu ◽  
Kazuhide Abe ◽  
Shuichi Komatsu
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Layered Perovskite ◽  
Lattice Deformation ◽  
Epitaxial Thin Films ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Tetragonal Lattice ◽  
Cubic Structure ◽  
Ferromagnetic Ordering

ABSTRACTThe crystal structure and magnetic properties in epitaxially grown Sr1-xBaxRuO3 on SrTiO3 substrates were determined. Epitaxial Sr1-xBaxRuO3 exhibits a simple perovskite structure in the whole region of Ba/Sr ratio, in contrast to a complex hexagonal layered perovskite in the case of Ba-rich bulk Sr1-xBaxRuO3 which has plane-sharing oxygen octahedra. Tetragonal deformation was enhanced from the pseudo cubic structure of SrRuO3 to a highly distorted tetragonal lattice in BaRu03. Electronic properties such as conductivity and magnetization were examined and compared to the results of band calculation in which a tetragonal distortion was taken into account. A metal-insulator transition was not observed in this system either in the experiment or in the simulation, and metallic conductivity was maintained in the whole region of Ba content. The ferromagnetic ordering which occurs at 160K in pseudo-cubic bulk SrRuO3 was suppressed in Sr1-xBaxRuO3 films with increasing tetragonal deformation and Curie temperature decreased to 50K in BaRuO3.

Synthesis, crystal structure and magnetic properties of the Sr2Al0.78Mn1.22O5.2 anion-deficient layered perovskite

2009 ◽  
Vol 182 (2) ◽  
pp. 356-363 ◽  
Author(s):  
Hans D’Hondt ◽  
Joke Hadermann ◽  
Artem M. Abakumov ◽  
Anna S. Kalyuzhnaya ◽  
Marina G. Rozova ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Layered Perovskite

Contribution to the study of the metal-insulator transition in the system II. Magnetic properties

1972 ◽  
Vol 11 (1) ◽  
pp. vii
Author(s):  
J.P. Pouget ◽  
P. Lederer ◽  
D.S. Schreiber ◽  
H. Launois ◽  
D. Wohlleben ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Magnetic properties across the metal‐insulator transition (invited)

1988 ◽  
Vol 63 (8) ◽  
pp. 4285-4290 ◽  
Author(s):  
Subir Sachdev ◽  
R. N. Bhatt ◽  
M. A. Paalanen
Keyword(s):  
Magnetic Properties ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Features of the Crystal Structure of Tm1–xYbxB12 Dodecaborides near a Quantum Critical Point and at a Metal–Insulator Transition

JETP Letters ◽  
2018 ◽  
Vol 108 (10) ◽  
pp. 691-696 ◽  
Author(s):  
N. E. Sluchanko ◽  
A. P. Dudka ◽  
O. N. Khrykina ◽  
N. B. Bolotina ◽  
A. N. Azarevich ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Critical Point ◽  
Quantum Critical Point ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Quantum Critical

Magnetic properties and the metal–insulator transition in solid solutions

2010 ◽  
Vol 150 (13-14) ◽  
pp. 602-604 ◽  
Author(s):  
O.B. Romanova ◽  
L.I. Ryabinkina ◽  
V.V. Sokolov ◽  
A.Yu. Pichugin ◽  
D.A. Velikanov ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Solid Solutions ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Metal insulator transition with ferrimagnetic order in epitaxial thin films of spinel NiCo2O4

2012 ◽  
Vol 100 (3) ◽  
pp. 032102 ◽  
Author(s):  
Punam Silwal ◽  
Ludi Miao ◽  
Ilan Stern ◽  
Xiaolan Zhou ◽  
Jin Hu ◽  
...  
Keyword(s):  
Thin Films ◽  
Insulator Transition ◽  
Epitaxial Thin Films ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Spinel Nico2o4

Grain-Size Effects and the Physical Properties of La0.7Ca0.3MnO3-δ

2005 ◽  
Vol 277-279 ◽  
pp. 929-934 ◽  
Author(s):  
H.K. Lee ◽  
Horst Baier ◽  
J.S. Park ◽  
Y.P. Lee ◽  
Youn Seoung Lee
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Transition Temperature ◽  
Physical Properties ◽  
Size Effects ◽  
Annealing Temperature ◽  
Oxygen Deficiency ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Grain Sizes

The effects of grain-size in La0.7Ca0.3MnO3-δ (LCMO) system have been studied in connection with the magnetic and electronic properties. LCMO system prepared by the solid-state reaction was annealed in air at 1200, 1300 and 1400°C. The grain sizes of LCMO samples become larger with increasing of annealing temperature (TA ). The magnetization in LCMO samples increased while the coercive field decreased with increasing TA. The conductivity increased and the metal-insulator transition temperature TM-I decreased with increasing of TA. These physical properties are due to the oxygen deficiency caused by the increase of grain size. Finally, it was found that the grain size and the mechanical connection between grains play an important role in determining the electronic and magnetic properties.

Effects of different sintering temperatures on microstructural, transport, and magnetic properties of La0.93Sb0.07MnO3 compound

2014 ◽  
Vol 28 (24) ◽  
pp. 1450166
Author(s):  
Q. Wang ◽  
P. Duan ◽  
J. Y. Wang ◽  
L. Chang ◽  
J. X. Deng ◽  
...  
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Transition Temperature ◽  
Solid State ◽  
Lattice Distortion ◽  
Solid State Reaction Method ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Reaction Method ◽  
Different Temperatures

Polycrystalline La 0.93 Sb 0.07 MnO 3 ceramics were synthesized using solid-state reaction method. The samples were sintered at different temperatures ranging from 1100°C to 1200°C. It is observed that microstructural, transport and magnetic properties of La 0.93 Sb 0.07 MnO 3 compounds strongly depend on sintering temperatures (TS). With TS increasing, the degree of lattice distortion has been weakened, the grain size has become larger and grain boundaries have decreased. Furthermore, the resistivity was reduced, and metal–insulator transition temperature was enhanced; the saturation magnetization per unit mass has decreased with TS increasing. These effects of different TS on physical properties can be explained by the structure distortion and grain boundary contributions for La 0.93 Sb 0.07 MnO 3 compounds.

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