Spin-frustrated pyrochlore chains in the volcanic mineral kamchatkite (KCu3OCl(SO4)2)
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Search of new frustrated magnetic systems is of a significant importance for physics studying the condensed matter. The platform for geometric frustration of magnetic systems can be provided by copper oxocentric tetrahedra (OCu4) forming the base of crystalline structures of copper minerals from Tolbachik volcanos in Kamchatka. The present work was devoted to a new frustrated antiferromagnetic—kamchatkite (KCu3OCl(SO4)2). The calculation of the sign and strength of magnetic couplings in KCu3OCl(SO4)2 has been performed on the basis of structural data by the phenomenological crystal chemistry method with taking into account corrections on the Jahn–Teller orbital degeneracy of Cu2+. It has been established that kamchatkite (KCu3OCl(SO4)2) contains AFM spin-frustrated chains of the pyrochlore type composed of cone-sharing Cu4 tetrahedra. Strong AFM intrachain and interchain couplings compete with each other. Frustration of magnetic couplings in tetrahedral chains is combined with the presence of electric polarization.
KeywordsMagnetic mineral Kamchatkite KCu3OCl(SO4)2 Corner-sharing tetrahedral spin chains Geometrically frustrated Jahn–Teller effect Cu3Mo2O9 KCuF3
The work was partially supported by the Program of Basic Research “Far East” (Far-Eastern Branch of Russian Academy of Sciences), Project No. 15-I-3-026.
- Anderson PW (1963). In: Seitz F, Turnbull D (eds) Solid state physics, vol 14. Academic, New York, pp 99–214Google Scholar
- Gaertner HR (1930) Neues jahrbuch fuer mineralogie, geologie und palaeontologie. Beilagen Abt A 61:1–30Google Scholar
- Goodenough JB (1963) Magnetism and the chemical bond. Wiley, New York, LondonGoogle Scholar
- Kikuchi H, Kunieda K, Fujii Y, Matsuo A, Kindo K (2016) Successive magnetic phase transitions in a novel frustrated magnet KCu3OCl(SO4)2. Submitted to Proc.HFM2016 (Taipei, 2016). https://www.jstage.jst.go.jp/article/jpsgaiyo/70.2/0/70.2_770/_pdf
- Kunieda K, Kikuchi H, Fujii Y, Astuti F, Sari DR, Watanabe I (2017) Successive magnetic phase transition of the new frustrated compound KCu3OCl(SO4)2. RIKEN Accel Prog Rep 50:236. http://www.nishina.riken.jp/researcher/APR/APR050/pdf/236.pdf Google Scholar
- Krivovichev SV, Filatov SK (2001) Crystal chemistry of minerals and inorganic compounds based on complexes of anion-centered tetrahedra. St. Petersburg University Press, St. PetersburgGoogle Scholar
- Kugel’ K, Khomskii DI (1973) Crystal-structure and magnetic properties of substances with orbital degeneracy. Zh Eksp Teor Fiz 64:1429–1439Google Scholar
- Kuroe H, Kino R, Hosaka T, Suzuki M, Hachiuma S, Sekine T, Hase M, Oka K, Ito T,. Eisaki H, Fujisawa M, Okubo S, Ohta H (2011a) Electric polarization induced by Néel order without magnetic superlattice: experimental study of Cu3Mo2O9 and numerical study of a small spin cluster. J Phys Soc Jpn 80:083705–083704CrossRefGoogle Scholar
- Kuroe H, Hamasaki T, Sekine T, Hase M, Oka K, Ito T, Eisaki H, Kaneko K, Metoki N, Matsuda M, Kakurai K (2011b) Hybridization of magnetic excitations between quasi-one-dimensional spin chains and spin dimers in Cu3Mo2O9 observed using inelastic neutron scattering. Phys Rev B 83:184423–184428CrossRefGoogle Scholar
- Vonsovsky SV (1971) Magnetism. Nauka, Moscow (in Russian) [Vonsovsky SV (1974) Magnetism. Wiley, NY]Google Scholar