Investigations on phase change characteristics of Ti-doped Ge sub(2)Sb sub(2)Te sub(5) system
Ab initio calculations and experiments are both adopted to study the effects of Ti dopant on the phase change characteristics of Ge sub(2)Sb sub(2)Te sub(5). The original and Ti-doped Ge sub(2)Sb sub(2)Te sub(5) films were deposited by magnetron sputtering. The optical and structural properties were...
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| Veröffentlicht in: | Journal of physics. D, Applied physics Applied physics, 2015-12, Vol.48 (47), p.475108-475114 |
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| container_end_page | 475114 |
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| container_issue | 47 |
| container_start_page | 475108 |
| container_title | Journal of physics. D, Applied physics |
| container_volume | 48 |
| creator | Cheng, Shuai Wei, Shenjin Yi, Xinyu Wang, Jun Liu, Chaochao Li, Jing Yang, Tieying |
| description | Ab initio calculations and experiments are both adopted to study the effects of Ti dopant on the phase change characteristics of Ge sub(2)Sb sub(2)Te sub(5). The original and Ti-doped Ge sub(2)Sb sub(2)Te sub(5) films were deposited by magnetron sputtering. The optical and structural properties were investigated by spectroscopic ellipsometry and grazing incidence diffraction methods. According to the calculation results of the density of states and optical band gap, the Ti-doped Ge sub(2)Sb sub(2)Te sub(5) has a less narrow band gap than the original one. A comparison of the theoretical and experimental results shows that Ti dopant restrains the phase transition from amorphous to cubic and eliminates that from cubic to hexagonal. Besides, the reflectivity of Ge sub(2)Sb sub(2)Te sub(5) decreases after doping the Ti element. |
| doi_str_mv | 10.1088/0022-3727/48/47/475108 |
| format | Article |
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The original and Ti-doped Ge sub(2)Sb sub(2)Te sub(5) films were deposited by magnetron sputtering. The optical and structural properties were investigated by spectroscopic ellipsometry and grazing incidence diffraction methods. According to the calculation results of the density of states and optical band gap, the Ti-doped Ge sub(2)Sb sub(2)Te sub(5) has a less narrow band gap than the original one. A comparison of the theoretical and experimental results shows that Ti dopant restrains the phase transition from amorphous to cubic and eliminates that from cubic to hexagonal. 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Besides, the reflectivity of Ge sub(2)Sb sub(2)Te sub(5) decreases after doping the Ti element.</description><subject>Diffraction</subject><subject>Dopants</subject><subject>Ellipsometry</subject><subject>Mathematical analysis</subject><subject>Optical properties</subject><subject>Phase change</subject><subject>Reflectivity</subject><subject>Titanium</subject><issn>0022-3727</issn><issn>1361-6463</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqVjTFvwjAUhC1UJFLoX0AeYUjzbMeJmVFLOzcrQiY8wFWwQ15Sqf--VkHdu9yd7j7pGJsLeBZgTAYgZapKWWa5yfKopY79iCVCFSIt8kI9sOQPmrBHok8A0IURCdu--y-k3p1s74InHjxvz5aQ12frT7_W2brHzkWojvuRVy49hBYPfIOchv1CLj_291DdGr3k9E09XmZsfLQN4dPdp2zx-lKt39K2C9ch_u4ujmpsGusxDLQTRupcw0qB-gf6Ay9DTUQ</recordid><startdate>20151201</startdate><enddate>20151201</enddate><creator>Cheng, Shuai</creator><creator>Wei, Shenjin</creator><creator>Yi, Xinyu</creator><creator>Wang, Jun</creator><creator>Liu, Chaochao</creator><creator>Li, Jing</creator><creator>Yang, Tieying</creator><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20151201</creationdate><title>Investigations on phase change characteristics of Ti-doped Ge sub(2)Sb sub(2)Te sub(5) system</title><author>Cheng, Shuai ; Wei, Shenjin ; Yi, Xinyu ; Wang, Jun ; Liu, Chaochao ; Li, Jing ; Yang, Tieying</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_miscellaneous_18254509303</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Diffraction</topic><topic>Dopants</topic><topic>Ellipsometry</topic><topic>Mathematical analysis</topic><topic>Optical properties</topic><topic>Phase change</topic><topic>Reflectivity</topic><topic>Titanium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cheng, Shuai</creatorcontrib><creatorcontrib>Wei, Shenjin</creatorcontrib><creatorcontrib>Yi, Xinyu</creatorcontrib><creatorcontrib>Wang, Jun</creatorcontrib><creatorcontrib>Liu, Chaochao</creatorcontrib><creatorcontrib>Li, Jing</creatorcontrib><creatorcontrib>Yang, Tieying</creatorcontrib><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of physics. D, Applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cheng, Shuai</au><au>Wei, Shenjin</au><au>Yi, Xinyu</au><au>Wang, Jun</au><au>Liu, Chaochao</au><au>Li, Jing</au><au>Yang, Tieying</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigations on phase change characteristics of Ti-doped Ge sub(2)Sb sub(2)Te sub(5) system</atitle><jtitle>Journal of physics. D, Applied physics</jtitle><date>2015-12-01</date><risdate>2015</risdate><volume>48</volume><issue>47</issue><spage>475108</spage><epage>475114</epage><pages>475108-475114</pages><issn>0022-3727</issn><eissn>1361-6463</eissn><abstract>Ab initio calculations and experiments are both adopted to study the effects of Ti dopant on the phase change characteristics of Ge sub(2)Sb sub(2)Te sub(5). The original and Ti-doped Ge sub(2)Sb sub(2)Te sub(5) films were deposited by magnetron sputtering. The optical and structural properties were investigated by spectroscopic ellipsometry and grazing incidence diffraction methods. According to the calculation results of the density of states and optical band gap, the Ti-doped Ge sub(2)Sb sub(2)Te sub(5) has a less narrow band gap than the original one. A comparison of the theoretical and experimental results shows that Ti dopant restrains the phase transition from amorphous to cubic and eliminates that from cubic to hexagonal. Besides, the reflectivity of Ge sub(2)Sb sub(2)Te sub(5) decreases after doping the Ti element.</abstract><doi>10.1088/0022-3727/48/47/475108</doi></addata></record> |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Diffraction Dopants Ellipsometry Mathematical analysis Optical properties Phase change Reflectivity Titanium |
| title | Investigations on phase change characteristics of Ti-doped Ge sub(2)Sb sub(2)Te sub(5) system |
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