Microscopic insights of magnetism in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Sm</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>NiMnO</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math> double perovskite
نویسندگان
چکیده
The functional characteristics of double perovskites with unique ferromagnetic-insulator ground state have been controversial due to the unavoidable presence anti-site disorders (ASDs). Here, we aim investigate origin magnetic ordering on local and global scales in Sm$_{2}$NiMnO$_{6}$ (SNMO) perovskite system. Different calcination routes are exploited generate different cation arrangements SNMO corresponding configurations examined using high energy (E $ \sim $0.3 eV) `hot neutrons', which has helped overcome Sm absorption as well record total (Bragg's+diffuse) scattering profiles momentum transfer (Q$ _{max} $24 angstrom$ ^{-1} $). We observed that Ni-Mn sublattice adopts long range collinear ferromagnetic F_{x}F_{z} structure commensurate $k$=(0, 0, 0) propagation vector, below temperature T \lesssim 160 K, irrespective variable ASD concentrations. In addition, signatures indicating antiparallel polarization paramagnetic moments respect network, noticed vicinity anomalous transitions at 35 K. real space pair distribution function calculations provided a direct visualization ASDs by means broadening Ni/Mn-Mn/Ni linkage. Employing Reverse Monte Carlo approach diffuse profiles, negative spin-spin correlation suggests Ni-Ni antiferromagnetic exchange interactions ranging up first nearest neighbor distance. These results confirm existence ordered host matrix leads competing ferromagnetic-antiferromagnetic phases broad range, quantitatively governs dependent bulk observables
منابع مشابه
Insights into cationic ordering in Re-based double perovskite oxides
Cationic ordering in Sr2FeReO6 (SFRO) and Sr2CrReO6 (SCRO) is investigated using magnetic property measurement, atomic-scale imaging, and first-principles calculations. We find that the nature of cationic ordering strongly depends on the host oxides, although they have the same crystal symmetry and chemical formula. Firstly, adding Re is effective to enhance the cationic ordering in SFRO, but m...
متن کاملOptically switched magnetism in photovoltaic perovskite CH3NH3(Mn:Pb)I3
The demand for ever-increasing density of information storage and speed of manipulation boosts an intense search for new magnetic materials and novel ways of controlling the magnetic bit. Here, we report the synthesis of a ferromagnetic photovoltaic CH3NH3(Mn:Pb)I3 material in which the photo-excited electrons rapidly melt the local magnetic order through the Ruderman-Kittel-Kasuya-Yosida inter...
متن کاملFerromagnetic resonance in double perovskite Ba2FeMoO6
In this work the study of the ferromagnetic resonance and of the electrical conductivity in the perovskite sample, Ba2FeMoO6, is presented. Double perovskite has been manufactured by conventional ceramic method sintering in an inert gas atmosphere. Electrical conductivity, of about 1000–1400 S/m, presents metallic behavior in the ferromagnetic region and semiconducting response in the paramagne...
متن کاملCharge Carrier Dynamics in Cs2AgBiBr6 Double Perovskite
Double perovskites, comprising two different cations, are potential nontoxic alternatives to lead halide perovskites. Here, we characterized thin films and crystals of Cs2AgBiBr6 by time-resolved microwave conductance (TRMC), which probes formation and decay of mobile charges upon pulsed irradiation. Optical excitation of films results in the formation of charges with a yield times mobility pro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.105.094425