scholarly journals Antisites driven magnetic transition study in La2NiMnO6

2021 ◽  
Vol 2070 (1) ◽  
pp. 012060
Author(s):  
R. Hissariya ◽  
S. K. Mishra
Keyword(s):  
Spin Glass ◽  
Room Temperature ◽  
Magnetic Transition ◽  
Double Perovskite ◽  
Charge Carriers ◽  
Magnetic Transitions ◽  
Spin Cluster ◽  
Transition Study ◽  
Lower Temperature ◽  
Unique Compound

Abstract La2NiMnO6 is a unique compound of multiferroics that exhibits two magnetic transitions of Curie points TC1 and TC2 below room temperature on a partial conversion of charge carriers, Ni2+ → Ni3+ and Mn4+→ Mn3+, stabilized with O2- vacancies in distorted octagons in a double perovskite of a spin cluster (glass), wherein the spins freezing at a critical Tg point at lower temperatures. The peak temperature and irreversibility temperature shifted to the lower temperature. The dc magnetization M (T) measurements indicate random ferromagnetic and antiferromagnetic interactions and multiple magnetic transitions. The critical slowing properties signify the spin-glass nature proved by the thermomagnetic relaxation measure.

Room temperature relaxor ferroelectricity and spin glass behavior in Sr2FeTiO6 double perovskite

2012 ◽  
Vol 522 ◽  
pp. 90-95 ◽  
Author(s):  
P. Neenu Lekshmi ◽  
S. Savitha Pillai ◽  
K.G. Suresh ◽  
P.N. Santhosh ◽  
Manoj Raama Varma
Keyword(s):  
Spin Glass ◽  
Room Temperature ◽  
Double Perovskite ◽  
Spin Glass Behavior ◽  
Glass Behavior

Laser Engineering of Barrier Structures Based on Solid Solution ZnCdHgTe.

2002 ◽  
Vol 719 ◽  
Author(s):  
Galina Khlyap
Keyword(s):  
Room Temperature ◽  
Film Surface ◽  
Charge Carriers ◽  
Barrier Structure ◽  
Free Charge ◽  
Current Voltage ◽  
Capacitance Voltage ◽  
Laser Engineering ◽  
Charged Defects ◽  
Epilayer Surface

AbstractRoom-temperature electric investigations carried out in CO2-laser irradiated ZnCdHgTe epifilms revealed current-voltage and capacitance-voltage dependencies typical for the metal-semiconductor barrier structure. The epilayer surface studies had demonstrated that the cell-like relief has replaced the initial tessellated structure observed on the as-grown samples. The detailed numerical analysis of the experimental measurements and morphological investigations of the film surface showed that the boundaries of the cells formed under the laser irradiation are appeared as the regions of accumulation of derived charged defects of different type of conductivity supplying free charge carriers under the applied electric field.

scholarly journals Practical Synthesis of 2-Iodosobenzoic Acid (IBA) without Contamination by Hazardous 2-Iodoxybenzoic Acid (IBX) under Mild Conditions

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1897
Author(s):  
Hideyasu China ◽  
Nami Kageyama ◽  
Hotaka Yatabe ◽  
Naoko Takenaga ◽  
Toshifumi Dohi
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Practical Method ◽  
Hypervalent Iodine ◽  
Mild Conditions ◽  
Sequential Procedures ◽  
Iodine Compounds ◽  
Practical Synthesis ◽  
Iodosobenzoic Acid ◽  
Lower Temperature

We report a convenient and practical method for the preparation of nonexplosive cyclic hypervalent iodine(III) oxidants as efficient organocatalysts and reagents for various reactions using Oxone® in aqueous solution under mild conditions at room temperature. The thus obtained 2-iodosobenzoic acids (IBAs) could be used as precursors of other cyclic organoiodine(III) derivatives by the solvolytic derivatization of the hydroxy group under mild conditions of 80 °C or lower temperature. These sequential procedures are highly reliable to selectively afford cyclic hypervalent iodine compounds in excellent yields without contamination by hazardous pentavalent iodine(III) compound.

scholarly journals Tailoring the Griffiths-like cluster formation in the insulator ferromagnet spin-glass Gd2NixCo1−xMnO6 double perovskite

2021 ◽  
Vol 104 (5) ◽  
Author(s):  
A. Harbi ◽  
Y. Le Godec ◽  
H. Moutaabbid ◽  
S. Benmokhtar ◽  
M. Moutaabbid
Keyword(s):  
Spin Glass ◽  
Cluster Formation ◽  
Double Perovskite

Room temperature magnetic transition in nanoparticles films of Pr0.5Sr0.5MnO3 produced by pulsed laser deposition

2021 ◽  
pp. 125067
Author(s):  
Wilmar S. Torres ◽  
Noemi R. Checca ◽  
Flávio Garcia ◽  
Alexandre Mello ◽  
Andre L. Rossi ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Room Temperature ◽  
Magnetic Transition ◽  
Pulsed Laser ◽  
Laser Deposition

scholarly journals Ferromagnetic Behaviors in Fe-Doped NiO Nanofibers Synthesized by Electrospinning Method

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Yi-Dong Luo ◽  
Yuan-Hua Lin ◽  
Xuehui Zhang ◽  
Deping Liu ◽  
Yang Shen ◽  
...  
Keyword(s):  
Room Temperature ◽  
Doping Concentration ◽  
Double Exchange ◽  
Host Lattice ◽  
Charge Carriers ◽  
Fe Doping ◽  
Free Charge ◽  
Ferromagnetic Properties ◽  
Electrospinning Method ◽  
Fe Ions

Ni1−xFexOnanofibers with different Fe doping concentration have been synthesized by electrospinning method. An analysis of the phase composition and microstructure shows that Fe doping has no influence on the crystal structure and morphology of NiO nanofibers, which reveals that the doped Fe ions have been incorporated into the NiO host lattice. Pure NiO without Fe doping is antiferromagnetic, yet all the Fe-doped NiO nanofiber samples show obvious room-temperature ferromagnetic properties. The saturation magnetization of the nanofibers can be enhanced with increasing Fe doping concentration, which can be ascribed to the double exchange mechanism through the doped Fe ions and free charge carriers. In addition, it was found that the diameter of nanofibers has significant impact on the ferromagnetic properties, which was discussed in detail.

Enhanced room temperature magnetoresistance and cluster spin glass behavior in Mo doping La0.67Sr0.33MnO3

2009 ◽  
Vol 105 (12) ◽  
pp. 123910 ◽  
Author(s):  
L. Chen ◽  
J. H. He ◽  
Y. Mei ◽  
Y. Z. Cao ◽  
B. Q. Liu ◽  
...  
Keyword(s):  
Spin Glass ◽  
Room Temperature ◽  
Mo Doping ◽  
Spin Glass Behavior ◽  
Cluster Spin Glass ◽  
Glass Behavior
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