| 1. |
- Kumari, Poonam, et al.
(författare)
-
Study of Ca doping on A- site on the structural and physical properties of BLTMNZ ceramics
- 2014
-
Ingår i: Advanced Materials Letters. - : Vinova Bhave Research Institute. - 0976-3961 .- 0976-397X. ; 5:5, s. 255-259
-
Tidskriftsartikel (refereegranskat)abstract
- The ferroelectric Ca doped (Ba0.9575La0.04X0.0025) (Ti0.815Mn0.0025Nb0.0025Zr0.18)0.99O3 was prepared by a high-temperature solid state reaction technique. For the understanding of the electrical and dielectric property, the relation between the crystal structures, electrical transition and ferroelectric transitions with increasing temperature (–160 to 35°C) have been analyzed. X-ray diffraction analysis of the powders suggests the formation of a single-phase material with monoclinic structure. Capacitance and tanδ of the specimens were measured in the temperature range from -160 to 35°Cat frequencies 1 kHz – 1 MHz. Detailed studies of dielectric and electrical properties indicate that the Curie temperature shifted to higher temperature with the increase in frequency. Moreover, the dielectric maxima dropped down rapidly initially and the dielectric peaks became extremely broad. The AC conductivity increases with increase in frequency. The low value of activation energy obtained for the ceramic samples could be attributed to the influence of electronic contribution to the conductivity.
|
|
| 2. |
- Rai, Radheshyam, et al.
(författare)
-
Experimental Techniques: An Introductory Overview
- 2012
-
Ingår i: Synthesis, Characterization and Application of Smart Materials. - USA : Nova Science Publishers, Inc.. - 9781614706427 ; , s. 15-30
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Smart materials, one of the more focused points in materials research, deal primarily with the chemistry, physics and applications of materials in the real world because it induces conformational changes in complex structures and properties which are useful for the control of them. The thrust area of these types of materials are the combination of functional properties like thermal, electric, magnetic, superconducting and optical, which have led to the development of a wide range of new technological devices. These types of materials have been found to be very useful and interesting for various solid state devices. This book examines research developments of smart materials, including processing, properties and applications, which include device materials and environmentally friendly materials. (Imprint: Nova)
|
|
| 3. |
- Rai, Radheshyam, et al.
(författare)
-
Synthesis and Characterization of Bi, Fe, Al and Sb- Modified PLZT
- 2012
-
Ingår i: Synthesis, Characterization and Application of Smart Materials. - USA : Nova Science Publishers, Inc.. - 9781614706427 ; , s. 31-98
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Smart materials, one of the more focused points in materials research, deal primarily with the chemistry, physics and applications of materials in the real world because it induces conformational changes in complex structures and properties which are useful for the control of them. The thrust area of these types of materials are the combination of functional properties like thermal, electric, magnetic, superconducting and optical, which have led to the development of a wide range of new technological devices. These types of materials have been found to be very useful and interesting for various solid state devices. This book examines research developments of smart materials, including processing, properties and applications, which include device materials and environmentally friendly materials. (Imprint: Nova)
|
|
| 4. |
- Thakur, Shweta, et al.
(författare)
-
Structural, dielectric and magnetic properties of Gd and Dy doped (Bi0.95RE0.05)(Fe0.95Mn0.05)O-3 ceramics synthesized by SSR method
- 2014
-
Ingår i: Solid State Communications. - : Elsevier. - 0038-1098 .- 1879-2766. ; 197
-
Tidskriftsartikel (refereegranskat)abstract
- The multiferruic (Bi0.95RE0.05)(Fe0.95Mn0.05)O-3 (where RE is Gd (BGFM) and Dy (BDFM)) has been synthesized by using the solid state reaction (SSR) technique. Effects of Gd and Dy substitutions on the structure, electrical and ferroelectric properties of (Bi0.95RE0.05)(Fe0.95Mn0.05)O-3 samples have been studied by performing X-ray diffraction, dielectric measurements and magnetic measurements. The crystal structure of the ceramic samples shows a monoclinic phase. Studies of dielectric properties (dielectric constant (epsilon) and tangent loss (tan delta)) both as a function of frequency (10 and 100 kHz) and temperatures (20-300 degrees C) exhibit dielectric anomaly in the range of (225-245 degrees C) suggesting a possible ferroelectric-paraelectric phase transition in the compounds. The vibrating sample magnetometer (VSM) measurement shows a significant change in the magnetic properties of Gd and Dy doped (Bi0.95RE0.05)(Fe0.95Mn0.05)O-3. It is seen that the coercive field (H-C) and remanent magnetization (M-R) increase for Gd.
|
|
| 5. |
- Tiwari, Ashutosh, et al.
(författare)
-
Bionanomaterials for Emerging Biosensors Technology
- 2012
-
Ingår i: Synthesis, Characterization and Application of Smart Materials. - USA : Nova Science Publishers, Inc.. - 9781614706427 ; , s. 137-154
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Smart materials, one of the more focused points in materials research, deal primarily with the chemistry, physics and applications of materials in the real world because it induces conformational changes in complex structures and properties which are useful for the control of them. The thrust area of these types of materials are the combination of functional properties like thermal, electric, magnetic, superconducting and optical, which have led to the development of a wide range of new technological devices. These types of materials have been found to be very useful and interesting for various solid state devices. This book examines research developments of smart materials, including processing, properties and applications, which include device materials and environmentally friendly materials
|
|
| 6. |
- Tiwari, Ashutosh, et al.
(författare)
-
Vinyls Modified Guar Gum Biodegradable Plastics
- 2012
-
Ingår i: Synthesis, Characterization and Application of Smart Materials. - USA : Nova Science Publishers, Inc.. - 9781614706427 ; , s. 125-136
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Smart materials, one of the more focused points in materials research, deal primarily with the chemistry, physics and applications of materials in the real world because it induces conformational changes in complex structures and properties which are useful for the control of them. The thrust area of these types of materials are the combination of functional properties like thermal, electric, magnetic, superconducting and optical, which have led to the development of a wide range of new technological devices. These types of materials have been found to be very useful and interesting for various solid state devices. This book examines research developments of smart materials, including processing, properties and applications, which include device materials and environmentally friendly materials
|
|
