MARC表示: Insulator-to-metal transition in potassium-loaded zeolite P

Insulator-to-metal transition in potassium-loaded zeolite P

Potassium metal was loaded into porous crystals of potassium-form maximum aluminum zeolite P (K-MAP), and optical absorption, electrical resistivity, and magnetic susceptibility measurements were performed. The average loading density of potassium atoms per GIS cage of zeolite P, n, was systematical...

詳細記述

保存先:

書誌詳細
主要な著者:	Hettiarachchi, Gayan Prasad, Nakano, Takehito, Masaki, Yusuke, Mohd. Muhid, Mohd. Nazlan, Hamdan, Halimaton, Nozue, Yasuo
フォーマット:	論文
出版事項:	Physical Society of Japan 2015
主題:	QD Chemistry
オンライン･アクセス:	http://eprints.utm.my/id/eprint/55972/ http://dx.doi.org/10.7566/JPSJ.84.014702
タグ:	タグ追加タグなし, このレコードへの初めてのタグを付けませんか!

id	my.utm.55972
record_format	eprints
spelling	my.utm.559722017-02-15T00:56:46Z http://eprints.utm.my/id/eprint/55972/ Insulator-to-metal transition in potassium-loaded zeolite P Hettiarachchi, Gayan Prasad Nakano, Takehito Masaki, Yusuke Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton Nozue, Yasuo QD Chemistry Potassium metal was loaded into porous crystals of potassium-form maximum aluminum zeolite P (K-MAP), and optical absorption, electrical resistivity, and magnetic susceptibility measurements were performed. The average loading density of potassium atoms per GIS cage of zeolite P, n, was systematically changed up to 1.09. Optical absorption bands are observed around 1.3-2 eV and grow to dominate the spectrum with increasing n. These absorption bands are assigned to the optical excitations of s-electrons confined in the zigzag channels of GIS cages. The temperature dependence of electrical resistivity ρ indicates insulating properties for n ≤ 1:05. At n = 1.09, ρ suddenly decreases by several orders of magnitude, and shows metallic properties indicating that an insulator-to-metal transition occurs between n = 1.05 and 1.09. The samples are basically nonmagnetic at any n. The nonmagnetic and insulating phase at n ≤ 1:05 is explained by the formation of small bipolarons in the spin-singlet states. The metallic phase at n = 1.09 is explained by the formation of large polarons Physical Society of Japan 2015-01 Article PeerReviewed Hettiarachchi, Gayan Prasad and Nakano, Takehito and Masaki, Yusuke and Mohd. Muhid, Mohd. Nazlan and Hamdan, Halimaton and Nozue, Yasuo (2015) Insulator-to-metal transition in potassium-loaded zeolite P. Journal of the Physical Society of Japan, 84 (1). ISSN 0031-9015 http://dx.doi.org/10.7566/JPSJ.84.014702 DOI:10.7566/JPSJ.84.014702
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	QD Chemistry
spellingShingle	QD Chemistry Hettiarachchi, Gayan Prasad Nakano, Takehito Masaki, Yusuke Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton Nozue, Yasuo Insulator-to-metal transition in potassium-loaded zeolite P
description	Potassium metal was loaded into porous crystals of potassium-form maximum aluminum zeolite P (K-MAP), and optical absorption, electrical resistivity, and magnetic susceptibility measurements were performed. The average loading density of potassium atoms per GIS cage of zeolite P, n, was systematically changed up to 1.09. Optical absorption bands are observed around 1.3-2 eV and grow to dominate the spectrum with increasing n. These absorption bands are assigned to the optical excitations of s-electrons confined in the zigzag channels of GIS cages. The temperature dependence of electrical resistivity ρ indicates insulating properties for n ≤ 1:05. At n = 1.09, ρ suddenly decreases by several orders of magnitude, and shows metallic properties indicating that an insulator-to-metal transition occurs between n = 1.05 and 1.09. The samples are basically nonmagnetic at any n. The nonmagnetic and insulating phase at n ≤ 1:05 is explained by the formation of small bipolarons in the spin-singlet states. The metallic phase at n = 1.09 is explained by the formation of large polarons
format	Article
author	Hettiarachchi, Gayan Prasad Nakano, Takehito Masaki, Yusuke Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton Nozue, Yasuo
author_facet	Hettiarachchi, Gayan Prasad Nakano, Takehito Masaki, Yusuke Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton Nozue, Yasuo
author_sort	Hettiarachchi, Gayan Prasad
title	Insulator-to-metal transition in potassium-loaded zeolite P
title_short	Insulator-to-metal transition in potassium-loaded zeolite P
title_full	Insulator-to-metal transition in potassium-loaded zeolite P
title_fullStr	Insulator-to-metal transition in potassium-loaded zeolite P
title_full_unstemmed	Insulator-to-metal transition in potassium-loaded zeolite P
title_sort	insulator-to-metal transition in potassium-loaded zeolite p
publisher	Physical Society of Japan
publishDate	2015
url	http://eprints.utm.my/id/eprint/55972/ http://dx.doi.org/10.7566/JPSJ.84.014702
_version_	1643653956564418560
score	13.250246

Insulator-to-metal transition in potassium-loaded zeolite P

類似資料