14 citations · 36 across the 24 of their papers we have counts for
24 papers
Effect of PEG binder on gas sensitivity of ferric oxide films synthesized by spin coating and doctor blade methods
P. Samarasekara, M. S. P. K. Gunasinghe, P. G. D. C. K. Karunarathna +2
Ferric oxide (Fe2O3) thin films were fabricated on amorphous nonconductive and FTO conductive glass substrates starting from iron acetate nanoparticles by the doctor blade and the…
Optical properties of spin coated and sol-gel dip coated cupric oxide thin films
P. Samarasekara, N. G. K. V. M. Premasiri
Spin coating technique was employed to fabricate CuO films at different spin speeds for different time duration, and they were annealed at different temperatures for different time…
Effect of annealing temperature on photovoltaic properties of spin coated CdS films
D. M. C. U. Dissanayake, J. S. T. Wickramasinghe, P. Samarasekara
CdS thin film samples were fabricated using spin coating technique on normal glass and conductive glass substrates and annealed at different temperatures. According to the XRD patt…
Characterization of spin coated Zn doped cupric oxide thin films
P. Samarasekara, P. G. D. C. K. Karunarathna, H. P. Weeramuni +1
Thin films of Zn2+ doped cupric oxide (CuO) were synthesized using spin coating technique starting from a solution with Cu and Zn. The speed of spin coating and time duration were…
Third order perturbed modified Heisenberg Hamiltonian of fcc structured ferromagnetic films with seventy spin layers
P. Samarasekara, N. U. S. Yapa, C. A. N. Fernando
Magnetic properties of fcc structured ferromagnetic films with the number of spin layers up to seventy was described using third order perturbed Heisenberg Hamiltonian. The variati…
Optical properties of spin coated Cu doped ZnO nanocomposite films
P. Samarasekara, Udumbara Wijesinghe
Spin coating technique was used to synthesize pure ZnO and Cu doped ZnO films on amorphous and conducting glass substrates. The doped amount of Cu in ZnO was varied up to 5% in ato…
Third order perturbed Heisenberg Hamiltonian of sc ferromagnetic films with fifty spin layers
N. U. S. Yapa, P. Samarasekara
Magnetic energy of simple cubic structured ferromagnetic films with 10 to 50 spin layers was determined using third order perturbed Heisenberg Hamiltonian. By plotting 3-D plot of…
Photocurrent enhancement of spin coated CdS thin films by adding Cu
P. Samarasekara, B. M. M. B. Basnayaka, Sunil Dehipawala
Cu added CdS films were synthesized using spin coating technique at different spin speeds for different time durations. Films were subsequently annealed at different temperatures f…
Magnetic Dipole Interaction and Total Magnetic Energy of Lithium Ferrire Thin Films
P. Samarasekara, C. K. D. Sirimanna
The total magnetic energy of Lithium ferrite thin films was determined using the classical Heisenberg Hamiltonian. The short range magnetic dipole interactions between spins within…
Impedance and electrical properties of Cu doped ZnO thin films
P. Samarasekara, Udumbara Wijesinghe, E. N. Jayaweera
Cu doped transparent ZnO thin films were spin coated on conductive glass substrates. The samples were subsequently annealed in air for 1 hour at 500 0C in order to form the phase o…
Third Order Perturbed Heisenberg Hamiltonian of Thick Spinel Ferrite Films
P. Samarasekara
The third order perturbed Heisenberg Hamiltonian was employed to investigate the spinel thick nickel ferrite films. The variation of energy up to N=10000 was studied. At N=75, the…
Effect of stress induced anisotropy and applied magnetic field on second order perturbed energy of thin ferromagnetic films
P. Samarasekara
All the simulations were carried out for sc(001) film with three (N=3) layers. The effect of applied magnetic field and stress induced anisotropy on energy of ultra-thin ferromagne…
Thick ferromagnetic films and their anisotropies as described by second order perturbed Heisenberg Hamiltonian
P. Samarasekara
Second and fourth order anisotropy dependence of energy of thick simple cubic ferromagnetic films with 10000 layers is explained using Heisenberg Hamiltonian with second order pert…
Magnetic anisotropy dependence of the energy of oriented thick ferromagnetic films
P. Samarasekara
Heisenberg Hamiltonian was employed to describe the variation of energy of thick ferromagnetic films with second and fourth order anisotropies. At angle of 1.36 degrees and anisotr…
Second order perturbed Heisenberg Hamiltonian of Fe3O4 ultra-thin films
P. Samarasekara
Due to the wide range of applications, theoretical models of Fe3O4 films are found to be important. Ultra thin Fe3O4 films with ferrite structure have been theoretically investigat…
Demagnetization factor dependence of energy of thick ferromagnetic films
P. Samarasekara
Second order perturbed Heisenberg Hamiltonian was employed to study the variation of energy of ferromagnetic thick films with demagnetization factor. Under the influence of demagne…
Spin Coated Multilayered Cupric Oxide Thin Films and their structural properties
P. Samarasekara, N. G. K. V. M. Premasiri
Sol-gel spin coating technique was employed to synthesize CuO thin films at 1500 rpm, 2200 rpm and 2400 rpm for 30 seconds, and subsequently annealed at 150-550°C for 1 hour. Multi…
Easy Axis orientation of Ferromagnetic Films as Described by Third Order Perturbed Heisenberg Hamiltonian
P. Samarasekara, Prabhani Rajakaruna
The magnetic easy axis orientation was studied by the third order perturbed Heisenberg Hamiltonian. Ferromagnetic CoPt/AlN multilayer thin films with number of layers N=11, 16 and…
Easy axis orientation of Strontium ferrite thin films described by spin reorientation
P. Samarasekara, Udara Saparamadu
In plane orientation of magnetic easy axis of sputtered strontium hexaferrite thin films has been explained using classical Heisenberg Hamiltonian. The variation of average value o…
Third Order Perturbed Energy of Cobalt Ferrite Thick Films
P. Samarasekara
Magnetic properties and easy axis orientation of cobalt ferrite films with applied magnetic field and number of layers were studied. According to our theoretical studies explained…
Magnetic properties of Cobalt films described by second order perturbed Heisenberg Hamiltonian
P. Samarasekara, Amila D. Ariyaratne
Second order perturbed Heisenberg Hamiltonian was employed to investigate the magnetic properties of hexagonal Cobalt films. Initially the number of nearest neighbors and the const…
Effect of demagnetization factor dependence on energy of ultra-thin ferromagnetic films with four layers
P. Samarasekara
Simple cubic and body centered cubic ferromagnetic lattices with four layers were studied using Heisenberg Hamiltonian. According to 3-D plots, the films with four layers can be ea…
Structural and electrical properties of CdS thin films spin coated on glass substrates
P. Samarasekara, P. A. S. Madushan
CdS samples were synthesized on amorphous glass and conductive glass substrates at room temperature using spin coating technique and subsequently annealed at five different tempera…
Classical Heisenberg Hamiltonian Solution of Oriented Spinel Ferrimagnetic Thin Films
P. Samarasekara
The classical Heisenberg Hamiltonian was solved for oriented spinel thin and thick cubic ferrites. The dipole matrix of complicated cubic cell could be simplified into the form of…