Dielectric constants of BeO, MgO, and CaO using the two-terminal method

Subramanian, M. A.; Shannon, R. D.; Chai, B. H. T.; Abraham, M. M.; Wintersgill, M. C.

doi:10.1007/bf00209695

Cited by 85 publications

(35 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The agreement between the observed dielectric polarizability of the peridot and that calculated from the sum of the oxide polarizabilities according to the oxide additivity rule (Eqn 3) is excellent. The deviation between the observed and calculated values for tephroite is significantly larger than the typical 1% variation observed previously for a series of aluminates, gallates and silicates Subramanian et al 1989;Shannon et al 1989Shannon et al , 1990Shannon 1990). Using dielectric data of Plendl et al (1969) which we believe to be less accurate than the data of Seehra et al (1986) still leaves a deviation of + 1.4%.…”

Section: Resultsmentioning

confidence: 46%

“…Sputtered gold electrodes were applied over the entire parallel surfaces of the sample using a Denton Vacuum Desk II sputtering unit. Sample preparation is described in detail in Subramanian et al (1989).…”

Section: Methodsmentioning

confidence: 99%

“…Dielectric constant measurements were performed over the frequency range 30 KHz-3 MHz with a parallel plate capacitance technique using Hewlett-Packard 4274A and 4275A LCR bridges and fixture 16034B (Test Tweezers) according to the procedure described by Subramanian et al (1989). Edge corrections were made using the expression:…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Dielectric constants of tephroite, fayalite and olivine and the oxide additivity rule

et al. 1991

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 46%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric constants of tephroite, fayalite and olivine and the oxide additivity rule

et al. 1991

View full text Add to dashboard Cite

show abstract

“…The room-temperature fundamental absorption in this material occurs at 7.6 eV with a probable second peak at 8.8 eV [34]. The dielectric constant of this material is 10 [35]. Thus, highly-insulating nature of this material, provides an opportunity to be utilized in fabrication of magnetic tunnel junctions, an important spintronic device [36].…”

Section: General Propertiesmentioning

confidence: 99%

d° Ferromagnetism of Magnesium Oxide

Singh

Chae

2017

Condensed Matter

View full text Add to dashboard Cite

Magnetism without d-orbital electrons seems to be unrealistic; however, recent observations of magnetism in non-magnetic oxides, such as ZnO, HfO 2 , and MgO, have opened new avenues in the field of magnetism. Magnetism exhibited by these oxides is known as d • ferromagnetism, as these oxides either have completely filled or unfilled d-/f-orbitals. This magnetism is believed to occur due to polarization induced by p-orbitals. Magnetic polarization in these oxides arises due to vacancies, the excitation of trapped spin in the triplet state. The presence of vacancies at the surface and subsurface also affects the magnetic behavior of these oxides. In the present review, origins of magnetism in magnesium oxide are discussed to obtain understanding of d • ferromagnetism.

show abstract

“…The dielectric measurements were carried out by a parallel plate capacitance technique using a HIOKI 3531 Z Hitester according to the procedure described by Subramanian et al [14] in 1989. Also, according to the ASTM standard test methods [15], two equal electrodes (smaller than the specimen) were prepared using high-conductivity silver paint.…”

Section: Dielectric Measurementsmentioning

confidence: 99%

Investigation of the effect of gamma rays on electrical properties of chlorinated poly (vinyl chloride)

Nouh

Abdel‐Naby

2003

Radiation Effects and Defects in Solids

View full text Add to dashboard Cite

Dielectric constant, dielectric loss and AC conductivity were measured, in the frequency range 100 Hz to 5 MHz in chlorinated poly (vinyl chloride) (CPVC) before and after exposure to gamma irradiation at doses between 5.0 KGy and 50.0 KGy. The frequency dependencies of e 0 , e 00 and s AC at 30 C were investigated. A relaxation peak in the dielectric loss and a corresponding step in the dielectric constant have been observed, in the frequency ranges 10 3 Hz to 10 4 Hz. The dielectric constant e 0 , dielectric loss e 00 and AC conductivity s AC are also found to increase at heating up to 100 C. In addition the effect of gamma irradiation on the frequency dependencies of e 0 , e 00 and s AC was measured at room temperature. The gamma irradiation leads to an increase in the efficiency of soft segments. Furthermore, the DC electrical conductivity of both the irradiated and non-irradiated samples was investigated. The induced electrical conductivity and the activation energy were measured, at various temperatures, as a function of gamma dose. It was found that the gamma radiation has a definite effect on the DC conductivity of the CPVC polymer.

show abstract

Dielectric constants of BeO, MgO, and CaO using the two-terminal method

Cited by 85 publications

References 32 publications

Dielectric constants of tephroite, fayalite and olivine and the oxide additivity rule

Dielectric constants of tephroite, fayalite and olivine and the oxide additivity rule

d° Ferromagnetism of Magnesium Oxide

Investigation of the effect of gamma rays on electrical properties of chlorinated poly (vinyl chloride)

Contact Info

Product

Resources

About