Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3

Dielectrics: into a new phase An unexpected atomic arrangement in a material useful for electronics is identified by researchers in India, the UK, and the USA. Ashok Kumar from the CSIR-National Physical Laboratory and co-workers observe a phase change in strontium zirconate at 650 K. Strontium zirc...

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Autores principales:	Ashok Kumar, Shalini Kumari, Hitesh Borkar, Ram S Katiyar, James Floyd Scott
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
Acceso en línea:	https://doaj.org/article/b3ac290bbfcc46bea4c047fe5c684a4f
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spelling	oai:doaj.org-article:b3ac290bbfcc46bea4c047fe5c684a4f2021-12-02T16:19:45ZExperimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 310.1038/s41524-016-0002-y2057-3960https://doaj.org/article/b3ac290bbfcc46bea4c047fe5c684a4f2017-01-01T00:00:00Zhttps://doi.org/10.1038/s41524-016-0002-yhttps://doaj.org/toc/2057-3960Dielectrics: into a new phase An unexpected atomic arrangement in a material useful for electronics is identified by researchers in India, the UK, and the USA. Ashok Kumar from the CSIR-National Physical Laboratory and co-workers observe a phase change in strontium zirconate at 650 K. Strontium zirconate is an electrical insulator that has great potential in the semiconductor-technology because of its large dielectric constant. As this so-called perovskite is heated, its atomic structure changes at specific temperatures. But the sequence of these phase changes is still a matter of debate. Kumar and colleagues study the structure of strontium zirconate by measuring the optical emission associated with atomic vibrations—a method known as Raman spectroscopy and dielectric spectroscopy. They identify three anomalous features in these results that infer the presence of a new phase transition.Ashok KumarShalini KumariHitesh BorkarRam S KatiyarJames Floyd ScottNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Computer softwareQA76.75-76.765ENnpj Computational Materials, Vol 3, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765 Ashok Kumar Shalini Kumari Hitesh Borkar Ram S Katiyar James Floyd Scott Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3
description	Dielectrics: into a new phase An unexpected atomic arrangement in a material useful for electronics is identified by researchers in India, the UK, and the USA. Ashok Kumar from the CSIR-National Physical Laboratory and co-workers observe a phase change in strontium zirconate at 650 K. Strontium zirconate is an electrical insulator that has great potential in the semiconductor-technology because of its large dielectric constant. As this so-called perovskite is heated, its atomic structure changes at specific temperatures. But the sequence of these phase changes is still a matter of debate. Kumar and colleagues study the structure of strontium zirconate by measuring the optical emission associated with atomic vibrations—a method known as Raman spectroscopy and dielectric spectroscopy. They identify three anomalous features in these results that infer the presence of a new phase transition.
format	article
author	Ashok Kumar Shalini Kumari Hitesh Borkar Ram S Katiyar James Floyd Scott
author_facet	Ashok Kumar Shalini Kumari Hitesh Borkar Ram S Katiyar James Floyd Scott
author_sort	Ashok Kumar
title	Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3
title_short	Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3
title_full	Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3
title_fullStr	Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3
title_full_unstemmed	Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3
title_sort	experimental verification of the ab initio phase transition sequence in srzro3 and comparisons with srhfo3 and srsno 3
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b3ac290bbfcc46bea4c047fe5c684a4f
work_keys_str_mv	AT ashokkumar experimentalverificationoftheabinitiophasetransitionsequenceinsrzro3andcomparisonswithsrhfo3andsrsno3 AT shalinikumari experimentalverificationoftheabinitiophasetransitionsequenceinsrzro3andcomparisonswithsrhfo3andsrsno3 AT hiteshborkar experimentalverificationoftheabinitiophasetransitionsequenceinsrzro3andcomparisonswithsrhfo3andsrsno3 AT ramskatiyar experimentalverificationoftheabinitiophasetransitionsequenceinsrzro3andcomparisonswithsrhfo3andsrsno3 AT jamesfloydscott experimentalverificationoftheabinitiophasetransitionsequenceinsrzro3andcomparisonswithsrhfo3andsrsno3
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Experimental verification of the ab initio phase transition sequence in SrZrO3 and comparisons with SrHfO3 and SrSnO 3

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