Electronic structure of the system Y 2− x M x BaNiO 5 (M= C a, S r) was calculated for x= 0,
0.2, and 0.5 using the full-potential linearized augmented-plane-wave method. To describe …

Observation of ferroelectricity among non-d0 systems, which was believed for a long time an
unrealistic concept, led to various proposals for the mechanisms to explain the same (ie …

We investigated the size effect on magnetocaloric effect (MCE) of Haldane spin-chain
antiferromagnet Er 2 BaNiO 5. The bulk sample was prepared by solid state route and the …

We report the results of various measurements, namely magnetization, complex dielectric
permittivity, and electric polarization (P), on Dy 2 BaNiO 5 as a function of temperature (T) …

We investigate the evolution of electronic structure with dimensionality (d) of Ni-O-Ni
connectivity in divalent nickelates, NiO (3− d), La 2 NiO 4, Pr 2 NiO 4 (2− d), Y 2 BaNiO 5 (1 …

Single crystals of BaNi 0.83 O 2.5 were grown from mixtures of BaCO 3 and NiO using KOH
as a flux. The composition and the crystal structure have been established from X-ray single …

The Haldane spin-chain compound Tb 2 BaNiO 5 has been known to order
antiferromagnetically below (TN=) 63 K. The present magnetic studies on the polycrystals …

A neutron diffraction study, as a function of temperature, of the title compounds is presented.
The whole family (space group Immm, a≈ 3.8 Å, b≈ 5.8 Å, c≈ 11.3 Å) is structurally …

The s= 1 Heisenberg antiferromagnet is studied in the presence of two kinds of local
impurities. First, a perturbed antiferromagnetic bond with J'≠ J at the center of an even …

Magnetic susceptibility and magnetization as a function of temperature and applied field of
the series of nickelates with the general formula R2BaNiO5 have been measured. At …