{"title":"Magnetism and Electronic Structure of the Fe 3 O 4 (111) Surface","authors":"K. Asakawa, T. Kawauchi, K. Fukutani","doi":"10.1380/JSSSJ.38.608","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.608","url":null,"abstract":"","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"14 1","pages":"608-613"},"PeriodicalIF":0.0,"publicationDate":"2017-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78868124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Shirasawa, W. Voegeli, E. Arakawa, Chika Kamezawa, Toshio Takahashi, T. Matsushita
{"title":"Structural Change of TiO 2 (110) Surface Involved in the Photoinduced Wettability Transition","authors":"T. Shirasawa, W. Voegeli, E. Arakawa, Chika Kamezawa, Toshio Takahashi, T. Matsushita","doi":"10.1380/JSSSJ.38.620","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.620","url":null,"abstract":"","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"52 1","pages":"620-625"},"PeriodicalIF":0.0,"publicationDate":"2017-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86773200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Report on Joint Symposium of the Surface Science Society of Japan and the Vacuum Society of Japan (SSVS 2017)","authors":"K. Nakajima","doi":"10.1380/jsssj.38.584","DOIUrl":"https://doi.org/10.1380/jsssj.38.584","url":null,"abstract":"","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"67 1","pages":"584-585"},"PeriodicalIF":0.0,"publicationDate":"2017-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76711696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Okada, Urara Toyota, Kosuke Minou, M. Yoshimura, K. Kadono
In the present study, surface organic nanostructures consisting of melamine and terephthalaldehyde were prepared by solution method, i. e. solvent evaporations of the aqueous solutions. The prepared samples were observed using scanning tunneling microscopy (STM) in ultrahigh vacuum (UHV). In UHV observation, no oligomers as reaction products were imaged. Instead, unknown beltlike molecular rows and disordered phase appeared. In the case of coexisted area of the unknown and disordered phases, tip-induced phase transition was observed. The beltlike rows were attributed to the arrangement of terephthalaldehyde molecules. Based on the high-resolution observation, the tentative model of the TPA arrangement was proposed. The elongated keeping of the sample in UHV to progress the oligomer formation did not lead to formation of oligomers. From the present experimental results, we consider that the stability of the reaction products in UHV is low and such reactant molecules were probably included in the mobile disordered phases. GNR )
{"title":"Fabrication and UHV-STM Observation of Melamine-Aldehyde Nanostructures from Solutions on Au","authors":"A. Okada, Urara Toyota, Kosuke Minou, M. Yoshimura, K. Kadono","doi":"10.1380/JSSSJ.38.384","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.384","url":null,"abstract":"In the present study, surface organic nanostructures consisting of melamine and terephthalaldehyde were prepared by solution method, i. e. solvent evaporations of the aqueous solutions. The prepared samples were observed using scanning tunneling microscopy (STM) in ultrahigh vacuum (UHV). In UHV observation, no oligomers as reaction products were imaged. Instead, unknown beltlike molecular rows and disordered phase appeared. In the case of coexisted area of the unknown and disordered phases, tip-induced phase transition was observed. The beltlike rows were attributed to the arrangement of terephthalaldehyde molecules. Based on the high-resolution observation, the tentative model of the TPA arrangement was proposed. The elongated keeping of the sample in UHV to progress the oligomer formation did not lead to formation of oligomers. From the present experimental results, we consider that the stability of the reaction products in UHV is low and such reactant molecules were probably included in the mobile disordered phases. GNR )","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"5 3 1","pages":"384-389"},"PeriodicalIF":0.0,"publicationDate":"2017-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78372245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We carried out near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS) measurements of water-adsorbed ultrathin GeO 2 films on Ge substrates, and the results were compared with those for SiO 2 films on Si. We obtained NAP-XPS spectra at relative humidity (RH) values of up to 〜 15 % and showed that the GeO 2 / Ge structures attract more water molecules than the SiO 2 / Si structures at RH above 〜 10 − 4 % . This is probably because water molecules infiltrate the GeO 2 films to form hydroxyls. Then we revealed positive charging of the water-adsorbed SiO 2 films by their interaction with X-rays. For the water-adsorbed GeO 2 films, we observed greater positive charging of the films, of which origin is discussed.
{"title":"Water-Adsorbed Ultrathin GeO 2 /Ge and SiO 2 /Si Structure Studied In Situ by Near-Ambient-Pressure X-ray Photoelectron Spectroscopy","authors":"Kenta Arima","doi":"10.1380/JSSSJ.38.330","DOIUrl":"https://doi.org/10.1380/JSSSJ.38.330","url":null,"abstract":"We carried out near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS) measurements of water-adsorbed ultrathin GeO 2 films on Ge substrates, and the results were compared with those for SiO 2 films on Si. We obtained NAP-XPS spectra at relative humidity (RH) values of up to 〜 15 % and showed that the GeO 2 / Ge structures attract more water molecules than the SiO 2 / Si structures at RH above 〜 10 − 4 % . This is probably because water molecules infiltrate the GeO 2 films to form hydroxyls. Then we revealed positive charging of the water-adsorbed SiO 2 films by their interaction with X-rays. For the water-adsorbed GeO 2 films, we observed greater positive charging of the films, of which origin is discussed.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"28 1","pages":"330-335"},"PeriodicalIF":0.0,"publicationDate":"2017-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85170522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The energy distribution of the interface states at the SiO 2 / 4H-SiC(0001) interface was obtained using operando hard x-ray photoelectron spectroscopy. For the energy distribution, two components exsisted. The sharp and high density interface states were observed near the conduction band minimum (CBM) while uniform interface states were present in the entire SiC band-gap. The uniform interface states in the whole gap were assigned to graphitic carbon clusters at the interface while the sharp interface states near CBM could not be clarified in the present study.
{"title":"Direct Observation of the Energy Distribution of Interface States at SiO 2 /4H-SiC Interface: Operando Hard X-ray Photoelectron Spectroscopic Study","authors":"Y. Yamashita, R. Hasunuma, T. Nagata, T. Chikyow","doi":"10.1380/jsssj.38.347","DOIUrl":"https://doi.org/10.1380/jsssj.38.347","url":null,"abstract":"The energy distribution of the interface states at the SiO 2 / 4H-SiC(0001) interface was obtained using operando hard x-ray photoelectron spectroscopy. For the energy distribution, two components exsisted. The sharp and high density interface states were observed near the conduction band minimum (CBM) while uniform interface states were present in the entire SiC band-gap. The uniform interface states in the whole gap were assigned to graphitic carbon clusters at the interface while the sharp interface states near CBM could not be clarified in the present study.","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"38 1","pages":"347-350"},"PeriodicalIF":0.0,"publicationDate":"2017-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81351592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Report on Public Lecture in Kyushu Branch, 2016 “Changing Properties by Surface”","authors":"Shuichi Nagamatsu","doi":"10.1380/jsssj.38.367","DOIUrl":"https://doi.org/10.1380/jsssj.38.367","url":null,"abstract":"","PeriodicalId":13075,"journal":{"name":"Hyomen Kagaku","volume":"22 6S 1","pages":"367-367"},"PeriodicalIF":0.0,"publicationDate":"2017-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76518542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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