Mitra Mani Subedi - Academia.edu (original) (raw)

Mitra Mani Subedi

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Papers by Mitra Mani Subedi

Research paper thumbnail of Even-Odd-Layer-Dependent Symmetry Breaking in Synthetic Antiferromagnets

Even-Odd-Layer-Dependent Symmetry Breaking in Synthetic Antiferromagnets

arXiv (Cornell University), Aug 15, 2023

Research paper thumbnail of Magnon-magnon interactions induced by spin pumping-driven symmetry breaking in synthetic antiferromagnets

Magnon-magnon interactions induced by spin pumping-driven symmetry breaking in synthetic antiferromagnets

arXiv (Cornell University), Jan 18, 2023

Research paper thumbnail of Ceramics and its Importance

Himalayan Physics, 2013

The term "ceramic" once referred only to clay-based materials. However, new generations... more The term "ceramic" once referred only to clay-based materials. However, new generations of ceramic materials have tremendously expanded the scope and number of possible applications. Many of these new materials have a major impact on our daily lives and on our society. Ceramics has advanced far beyond its beginnings in clay pottery. Ceramic tiles cover the space shuttle as well as our kitchen floors. Ceramic electronic devices make possible high-tech instruments for everything from medicine to entertainment. Clearly, ceramics are our window to the future.The Himalayan Physics Vol. 4, No. 4, 2013 Page: 80-82 Uploaded date: 12/23/2013

Research paper thumbnail of An Experimental Study on Electrical Behaviour of (Pb<sub>1-x</sub>Sn<sub>x</sub>) TiO<sub>3</sub>(x=0.10,0.20,0.30) Ceramics

Himalayan Physics, 2011

Scientists as well as many researchers have been interested in the field of ceramics materials be... more Scientists as well as many researchers have been interested in the field of ceramics materials because of their broad field of applications. Electronic ceramics are very useful in device fabrications. The electronic ceramics such as Barium titanate (BaTiO 3), Lead titanate (PbTiO 3), Lead zirconate (PbZrO 3) with perovskite structure show ferroelectric and ant ferroelectric behaviors which are being used in many applications in electronics and optics. A large number of applications of ceramics also exploit properties that are an indirect consequence of ferroelectricity and antiferroelectricity such as dielectric, piezoelectric, electrostrictive, pyroelectric and electro-optic properties. 2. Experimental In the present work, we have synthesized (Pb 1-x Sn x) TiO 3 at temperatures<800 o C using the dry route involving the reaction between TiO 3 and (Pb 1-x Sn x)CO 3 .The pellets formed by this dry route method are used for the study of various characteristics.The Hioki (3532-50) LCR Hi-Tester is used to study the relaxor and dielectric properties of the sample. 3. results and discussion 3.1 Ferroelectric to paraelectric transition Variation of real part of dielectric constant with temperature at frequency 100 kHz during heating and cooling mode separately for (i)PST 10 %(ii)PST 20%(iii)PST 30% samples. Fig.1 (i,ii,iii) depict the variation of real part of dielectric constant with temperature during heating and cooling of samples for PST 10%, 20% and 30% respectively. We have observed data for heating and cooling cycles at frequency 100 KHz and in the temperature range from room temperature to 250 0 C. The ferroelectric to paraelectric phase transition occurs at temperature 190 o C for PST 10 %, 180 o C for PST 20 % during heating mode. But in case of PST 30 % we cannot draw any significant conclusion. The paraelectric to ferroelectric phase transitions for PST 10 % is 180 o C, for PST 20 % is 175 o C during cooling mode. The peak values of dielectric constants for heating mode are 1480.1 for PST 10 % and1530.69 for PST 20 %.

Research paper thumbnail of Even-Odd-Layer-Dependent Symmetry Breaking in Synthetic Antiferromagnets

Even-Odd-Layer-Dependent Symmetry Breaking in Synthetic Antiferromagnets

arXiv (Cornell University), Aug 15, 2023

Research paper thumbnail of Magnon-magnon interactions induced by spin pumping-driven symmetry breaking in synthetic antiferromagnets

Magnon-magnon interactions induced by spin pumping-driven symmetry breaking in synthetic antiferromagnets

arXiv (Cornell University), Jan 18, 2023

Research paper thumbnail of Ceramics and its Importance

Himalayan Physics, 2013

The term "ceramic" once referred only to clay-based materials. However, new generations... more The term "ceramic" once referred only to clay-based materials. However, new generations of ceramic materials have tremendously expanded the scope and number of possible applications. Many of these new materials have a major impact on our daily lives and on our society. Ceramics has advanced far beyond its beginnings in clay pottery. Ceramic tiles cover the space shuttle as well as our kitchen floors. Ceramic electronic devices make possible high-tech instruments for everything from medicine to entertainment. Clearly, ceramics are our window to the future.The Himalayan Physics Vol. 4, No. 4, 2013 Page: 80-82 Uploaded date: 12/23/2013

Research paper thumbnail of An Experimental Study on Electrical Behaviour of (Pb<sub>1-x</sub>Sn<sub>x</sub>) TiO<sub>3</sub>(x=0.10,0.20,0.30) Ceramics

Himalayan Physics, 2011

Scientists as well as many researchers have been interested in the field of ceramics materials be... more Scientists as well as many researchers have been interested in the field of ceramics materials because of their broad field of applications. Electronic ceramics are very useful in device fabrications. The electronic ceramics such as Barium titanate (BaTiO 3), Lead titanate (PbTiO 3), Lead zirconate (PbZrO 3) with perovskite structure show ferroelectric and ant ferroelectric behaviors which are being used in many applications in electronics and optics. A large number of applications of ceramics also exploit properties that are an indirect consequence of ferroelectricity and antiferroelectricity such as dielectric, piezoelectric, electrostrictive, pyroelectric and electro-optic properties. 2. Experimental In the present work, we have synthesized (Pb 1-x Sn x) TiO 3 at temperatures<800 o C using the dry route involving the reaction between TiO 3 and (Pb 1-x Sn x)CO 3 .The pellets formed by this dry route method are used for the study of various characteristics.The Hioki (3532-50) LCR Hi-Tester is used to study the relaxor and dielectric properties of the sample. 3. results and discussion 3.1 Ferroelectric to paraelectric transition Variation of real part of dielectric constant with temperature at frequency 100 kHz during heating and cooling mode separately for (i)PST 10 %(ii)PST 20%(iii)PST 30% samples. Fig.1 (i,ii,iii) depict the variation of real part of dielectric constant with temperature during heating and cooling of samples for PST 10%, 20% and 30% respectively. We have observed data for heating and cooling cycles at frequency 100 KHz and in the temperature range from room temperature to 250 0 C. The ferroelectric to paraelectric phase transition occurs at temperature 190 o C for PST 10 %, 180 o C for PST 20 % during heating mode. But in case of PST 30 % we cannot draw any significant conclusion. The paraelectric to ferroelectric phase transitions for PST 10 % is 180 o C, for PST 20 % is 175 o C during cooling mode. The peak values of dielectric constants for heating mode are 1480.1 for PST 10 % and1530.69 for PST 20 %.

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