Abstract
We have investigated the structural and magnetic properties of Fe1.15Te and Fe1.03Te0.62Se0.38 single crystals grown by slow cooling method using a specially designed double-walled quartz ampoule. X-ray diffraction reveals significant local inhomogeneity as a result of fractional substitution of Te site by Se in single crystal Fe1.03Te0.62Se0.38. The existence of superconductivity is confirmed for Se substitution to the Te site of Fe1.03Te0.62Se0.38 but with persistent Fe7Se8 impurity phase. Raman spectroscopy confirmed the surface structural instability when the samples were exposed to moderate laser irradiation in the atmospheric environment. With high intensity laser irradiation, Fe(Se,Te) compounds can be decomposed into Fe2O3 hematite phase.
Similar content being viewed by others
Reference
Kamihara Y, Watanabe T, Hirano M, Hosono H (2008) J Am Chem Soc 130:3296
Johnston DC (2010) Adv Phys 59:803
Hsu FC, Luo JY, Yeh KW, Chen TK, Huang TW, Wu PM, Lee YC, Huang YL, Chu YY, Yan DC, Wu MK (2008) Proc Natl Acad Sci 105:14262
Fang MH, Pham HM, Qian B, Liu TJ, Vehstedt EK, Liu Y, Spinu L, Mao ZQ (2008) Phys Rev B 78:224503
Sales BC, Sefat AS, McGuire MA, ** RY, Mandrus D (2009) Phys Rev B 79:094521
Chen GF, Chen ZG, Dong J, Hu WZ, Li G, Zhang XD, Zheng P, Luo JL, Wang NL (2009) Phys Rev B 79:140509
Mizuguchi Y, Tomioka F, Tsuda S, Yamaguchi T, Takano Y (2009) Appl Phys Lett 94:012503
Christianson AD, Goremychkin EA, Osborn R, Rosenkranz S, Lumsden MD, Malliakas CD, Todorov IS, Claus H, Chung DY, Kanatzidi MG, Bewley RI, Guidi T (2008) Nature 456:930
Bao W, Qiu Y, Huang Q, Green MA, Zajde P, Fitzsimmons MR, Zhernenkov M, Chang S, Fang M, Qian B, Vehstedt EK, Yang J, Pham HM, Spinu L, Mao ZQ (2009) Phys Rev Lett 102:247001
Li S, Cruz C, Huang Q, Chen Y, Lynn JW, Hu J, Huang YL, Hsu FC, Yeh KW, Wu MK, Dai P (2009) Phys Rev B 79:054503
Joseph B, Iadecola A, Puri A, Simonelli L, Mizuguchi Y, Takano Y, Saini NL (2010) Phys Rev B 82:020502
Hu H, Zuo JM, Wen JS, Xu ZJ, Lin ZW, Li Q, Gu G, Park WK, Greene LH, ar**v:1009.6010v1
Eroles J, Ortiz G, Balatsky AV, Bishop AR (2000) Europhys Lett 50:540
Chiba S (1955) J Phys Soc Jpn 10:837
Balamurugan N, Arulchakkaravarthi A, Ramasamy P (2008) J Cryst Growth 310:2115
Okada H, Takahashi H, Mizuguchi Y, Takano Y, Takahashi H (2009) J Phys Soc Jpn 78:083709
Moodenbaugh AR, Johnston DC, Viswanathan R, Shelton RN, DeLong LE, Fertig WA (1978) J Low Temp Phys 33:175
McQueen TM, Huang Q, Ksenofontov V, Felser C, Xu Q, Zandbergen H, Hor YS, Allred J, Williams AJ, Qu D, Checkelsky J, Ong NP, Cava RJ (2009) Phys Rev B 79:014522
Williams AJ, McQueen TM, Cava RJ (2009) Solid State Commun 149:1507
Bendele M, Weyeneth S, Puzniak R, Maisuradze A, Pomjakushina E, Conder K, Pomjakushin V, Luetkens H, Katrych S, Wisniewski A, Khasanov R, Keller H (2010) Phys Rev B 81:224520
Okazaki A, Hirakawa K (1956) J Phys Soc Jpn 11:930
Hou TLD, Zhao SC, Zhang AM, Chen GF, Luo JL, Wang NL, Wei JH, Lu ZY, Zhang QM (2009) Phys Rev B 79:140510
Okazakil K, Sugai S, Niitaka S, Takagi H (2011) Phys Rev B 83:035103
Kumar P, Kumar A, Saha S, Muthu D, Prakash J, Patnaik S, Waghmare U, Ganguli A, Sood A (2010) Solid State Commun 150:557
Torrie BH (1970) Solid State Commun 8:1899
Morell G, Figueroa AR, Katiyar RS, Farías MH, Beltran FJE, Angel OZ, Sinencio FS (1994) J Raman Spectrosc 25:203
Pine AS, Dresselhaus G (1971) Phys Rev B 4:356
Andrikopoulos KS, Yannopoulos SN, Voyiatzis GA, Kolobov AV, Ribes M, Tominaga J (2006) J Phys Condens Matter 18:965
Hawkins SA, Aleman EV, Duff MC, Hunter DB, Burger A, Groza M, Buliga V, Black DR (2008) J Electron Mater 37(9):1438
Teuchert WD, Geick R (1974) Phys Status Solidi (b) 61:123
Bastiani RD, Carria E, Gibilisco S, Grimaldi MG, Pennisi AR, Gotti A, Pirovano A, Bez R, Rimini E (2009) Phys Rev B 80:245205
Larramendi EM, Berth G, Wiedemeier V, Husch KP, Zrenner A, Woggon U, Tschumak E, Lischka K, Schikora D (2010) Semicond Sci Technol 25:075003
Okamoto H (1990) Bull Alloy Phase Diagr 4(11):372
Shebanova ON, Lazor P (2003) J Raman Spectrosc 34:845
Acknowledgement
FCC acknowledges the support from National Science Council of Taiwan under project number NSC-99-2119- M-002-011-MY2.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Rajasekaran, S.V., Tite, T., Chang, YM. et al. Local inhomogeneity and surface degradation of Fe1.15Te and Fe1.03Te0.62Se0.38 single crystals. J Mater Sci 46, 7582–7587 (2011). https://doi.org/10.1007/s10853-011-5733-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-011-5733-z