Competing Superexchange Interactions in Double Perovskite Osmates
نویسندگان
چکیده
منابع مشابه
Competing antiferromagnetic orders in the double perovskite Mn2MnReO6 (Mn3ReO6).
The new double perovskite Mn2MnReO6 has been synthesised at high pressure. Mn(2+) and Re(6+) spins order antiferromagnetically through two successive transitions that are coupled by magnetoelastic effects, as order of the Mn spins at 109 K leads to lattice distortions that reduce frustration prompting Re order at 99 K.
متن کاملLattice instability and competing spin structures in the double perovskite insulator Sr2FeOsO6.
The semiconductor Sr2FeOsO6, depending on temperature, adopts two types of spin structures that differ in the spin sequence of ferrimagnetic iron-osmium layers along the tetragonal c axis. Neutron powder diffraction experiments, 57Fe Mössbauer spectra, and density functional theory calculations suggest that this behavior arises because a lattice instability resulting in alternating iron-osmium ...
متن کاملStructural transition and unusually strong antiferromagnetic superexchange coupling in perovskite KAgF3.
High-purity samples of potassium trifluoroargentate(II), KAgF3, have been obtained via a novel synthetic pathway. This compound is found to exhibit an order-disorder phase transition around 230 K. Susceptibility measurements indicate that KAgF3 exhibits strong antiferromagnetic (AFM) coupling reminiscent of that found in copper(II) oxides.
متن کاملDistinct insulating state below the Curie point in Pr 0
Magnetization, resistivity, thermal expansion, thermopower, and neutron powder diffraction data are presented for the perovskite manganite Pr0.7Ba0.3MnO3. A distinct ferromagnetic insulating state, similar to that observed in the La0.88Sr0.12MnO3 system, is observed in the temperature range between the paramagneticferromagnetic transition at TFM'180 K and the broad metal-insulator transition ne...
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 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: Acta Crystallographica Section A Foundations and Advances
سال: 2014
ISSN: 2053-2733
DOI: 10.1107/s2053273314086331