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Intermediate magnetic phase of the magnetoelectric compound (Ca,Sr)BaCo4O7 described with the superspace formalism

J. Lohr1, A. L. Larralde2, J. Curiale3,4, R. Sánchez3,4, J. Campo5, G. J. Cuello6, D. Sheptyakov7, L. Keller7, M. Kenzelmann7 et al.

G. Aurelio8,*

  • 1Comisión Nacional de Energía Atómica–Laboratorio Argentino de Haces de Neutrones, Centro Atómico Bariloche, Av. Bustillo 9500 R8402AGP, S. C. de Bariloche, Argentina
  • 2Laboratorio de Cristalografía Aplicada, Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, Martín de Irigoyen 3100, Campus Miguelete, San Martín (1650), Buenos Aires, Argentina
  • 3Instituto de Nanociencia y Nanotecnología CNEA-CONICET, Centro Atómico Bariloche, Av. Bustillo 9500 R8402AGP, S. C. de Bariloche, Argentina
  • 4Instituto Balseiro, Universidad Nacional de Cuyo - Comisión Nacional de Energía Atómica, Av. Bustillo 9500 R8402AGP, S. C. de Bariloche, Argentina
  • 5Instituto de Ciencia de Materiales de Aragón (CSIC - Universidad de Zaragoza) and Departamento de Física de Materia Condensada, Universidad de Zaragoza. C/Pedro Cerbuna 12, E-50009 Zaragoza, Spain
  • 6Institut Laue Langevin. 71, Av des Martyrs, BP 156 F-38042 Grenoble, France
  • 7Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
  • 8Comisión Nacional de Energıa Atómica and CONICET Laboratorio Argentino de Haces de Neutrones. Centro Atómico Bariloche, Av. Bustillo 9500 R8402AGP, S. C. de Bariloche, Argentina

  • *gaurelio@cab.cnea.gov.ar, she/her/hers
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Phys. Rev. B 102, 134406 – Published 6 October, 2020

DOI: https://doi.org/10.1103/PhysRevB.102.134406

Abstract

In this work we report the temperature and doping-level evolution of the crystallographic and magnetic properties of the Sr-doped cobaltates Ca1−xSrxBaCo4O7. The noncollinear ferrimagnetic phase known for the magnetoelectric parent compound is found to persist only for a small amount of Sr doping (x=0.02) and is accompanied by a strong unit cell distortion. In turn, further Sr doping blurs this distortion of lattice parameters and favors other magnetic arrangements. In particular, this work focuses on an intermediate temperature region 62K<T<82K that shows a plateau in the magnetization. Using neutron powder diffraction at selected temperatures and compositions, we have solved the magnetic structure of this intermediate phase. By means of the superspace group theory and its implementation in the Rietveld refinement, we found that the phase belongs to the superspace group Pna211′(1/2,1/2,g)qq0s with a basic orthorhombic structure and a modulation of the magnetic moments along the c axis. The propagation vector is k=(12,12,g) with g∼0.02 and possibly dependent on temperature. A modulated spin structure with distinct behaviors of the triangular and kagome cobalt sites is reported in “114” cobaltates.

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References (47)

  1. M. Valldor, Solid State Sci. 4, 923 (2002).
  2. A. P. Ramirez, Annu. Rev. Mater. Sci. 24, 453 (1994).
  3. C. Lacroix, P. Mendels, and F. Mila, Introduction to Frustrated Magnetism: Materials, Experiments, Theory, Vol. 164 (Springer, New York, 2011).
  4. V. Caignaert, V. Pralong, A. Maignan, and B. Raveau, Solid State Commun. 149, 453 (2009).
  5. V. Caignaert, V. Pralong, V. Hardy, Ch. Ritter, and B. Raveau, Phys. Rev. B 81, 094417 (2010).
  6. Z. Qu, L. Ling, L. Zhang, L. Pi, and Y. Zhang, Solid State Commun. 151, 917 (2011).
  7. V. Caignaert, A. Maignan, K. Singh, Ch. Simon, V. Pralong, B. Raveau, J. F. Mitchell, H. Zheng, A. Huq, and L. C. Chapon, Phys. Rev. B 88, 174403 (2013).
  8. K. Singh, V. Caignaert, L. C. Chapon, V. Pralong, B. Raveau, and A. Maignan, Phys. Rev. B 86, 024410 (2012).
  9. R. D. Johnson, K. Cao, F. Giustino, and P. G. Radaelli, Phys. Rev. B 90, 045129 (2014).
  10. T. Sarkar, M. Motin Seikh, V. Pralong, V. Caignaert, and B. Raveau, Appl. Phys. Lett. 100, 232401 (2012).
  11. M. Seikh, T. Sarkar, V. Pralong, V. Caignaert, and B. Raveau, Phys. Rev. B 86, 184403 (2012).
  12. M. M. Seikh, V. Caignaert, E. Suard, K. P. Meher, A. Maignan, and B. Raveau, J. Appl. Phys. 116, 244106 (2014).
  13. C. Dhanasekhar, A. K. Das, R. Singh, A. Das, G. Giovannetti, D. Khomskii, and A. Venimadhav, Phys. Rev. B 96, 134413 (2017).
  14. M. M. Seikh, A. K. Kundu, V. Caignaert, and B. Raveau, J. Alloys Compd. 656, 166 (2016).
  15. D. Turkin, G. Bazuev, and A. Korolev, J. Magn. Magn. Mater. 422, 66 (2017).
  16. G. Aurelio, J. Curiale, R. D. Sánchez, and G. J. Cuello, J. Phys.: Condens. Matter 21, 326002 (2009).
  17. G. Aurelio, R. D. Sánchez, J. Curiale, and G. J. Cuello, J. Phys.: Condens. Matter 22, 486001 (2010).
  18. G. Aurelio, J. Curiale, F. Bardelli, R. Junqueira Prado, L. Hennet, G. Cuello, J. Campo, and D. Thiaudiere, J. Appl. Phys. 118, 134101 (2015).
  19. A. Janner and T. Janssen, Acta Crystallographica Section A 36, 399 (1980).
  20. J. M. Perez-Mato, J. L. Ribeiro, V. Petricek, and M. I. Aroyo, J. Phys.: Condens. Matter 24, 163201 (2012).
  21. J. Rodríguez-Carvajal and J. Villain, C. R. Phys. 20, 770 (2019).
  22. G. J. Cuello, G. Aurelio, F. Bardelli, and F. Cantargi, Structure and magnetism in the frustrated cobalt compound (Y,Ni)BaCo4O7+d, Institut Laue-Langevin (ILL) (2013), doi: 10.5291/ILL-DATA.5-24-530.
  23. J. Schefer, P. Fischer, H. Heer, A. Isacson, M. Koch, and R. Thut, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 288, 477 (1990).
  24. P. Fischer, G. Frey, M. Koch, M. Könnecke, V. Pomjakushin, J. Schefer, R. Thut, N. Schlumpf, R. Bürge, U. Greuter et al., Phys. B: Condens. Matter 276, 146 (2000).
  25. J. Rodríguez-Carvajal, Abstracts of the Satellite Meeting on Powder Diffraction of the XV Congress of the IUCr, Toulouse, France (1990), p. 127.
  26. LAMP, the Large Array Manipulation Program, http://www.ill.eu/data_treat/lamp/the-lamp-book/.
  27. H. T. Stokes, D. Hatch, and B. Campbell, ISOTROPY Software Suite, iso.byu.edu (2017).
  28. H. T. Stokes, D. M. Hatch, B. J. Campbell, and D. E. Tanner, J. Appl. Crystallogr. 39, 607 (2006).
  29. M. I. Aroyo, J. Perez-Mato, D. Orobengoa, E. Tasci, G. de la Flor, and A. Kirov, Bulg. Chem. Commun 43, 183 (2011).
  30. M. I. Aroyo, J. M. Perez-Mato, C. Capillas, E. Kroumova, S. Ivantchev, G. Madariaga, A. Kirov, and H. Wondratschek, Zeitschrift für Kristallographie-Crystalline Materials 221, 15 (2006).
  31. M. I. Aroyo, A. Kirov, C. Capillas, J. Perez-Mato, and H. Wondratschek, Acta Crystallographica Section A: Foundations of Crystallography 62, 115 (2006).
  32. M. M. Seikh, V. Caignaert, V. Pralong, and B. Raveau, J. Phys. Chem. Solids 75, 79 (2014).
  33. M. Motin Seikh, T. Sarkar, V. Pralong, V. Caignaert, and B. Raveau, J. Appl. Phys. 113, 053910 (2013).
  34. Edited by H. Theo, IUCr, International Tables for Crystallography, Volume A: Space Group Symmetry, 5th ed., International Tables for Crystallography (Kluwer Academic Publishers, Dordrecht, Boston, London, 2002).
  35. The transformation matrix between both settings is (b,a,−c).
  36. L. Pauling, H. P. Klug, and A. N. Winchell, Am. Mineral. 20, 492 (1935).
  37. L. C. Chapon, P. G. Radaelli, H. Zheng, and J. F. Mitchell, Phys. Rev. B 74, 172401 (2006).
  38. D. D. Khalyavin, P. Manuel, B. Ouladdiaf, A. Huq, P. W. Stephens, H. Zheng, J. F. Mitchell, and L. C. Chapon, Phys. Rev. B 83, 094412 (2011).
  39. L. Torre, G. Aurelio, E. Granado, and R. Sánchez, J. Solid State Chem. 230, 34 (2015).
  40. D. D. Khalyavin, L. C. Chapon, P. G. Radaelli, H. Zheng, and J. F. Mitchell, Phys. Rev. B 80, 144107 (2009).
  41. A. Huq, J. Mitchell, H. Zheng, L. Chapon, P. Radaelli, K. Knight, and P. Stephens, J. Solid State Chem. 179, 1136 (2006).
  42. S. N. Panja, J. Kumar, S. Dengre, and S. Nair, J. Phys.: Condens. Matter 28, 486001 (2016).
  43. M. Valldor, Y. Sanders, and W. Schweika, J. Phys.: Conf. Ser. 145, 012076 (2009).
  44. Jmol: an open-source Java viewer for chemical structures in 3D, http://www.jmol.org/.
  45. T. Sarkar, M. M. Seikh, V. Pralong, V. Caignaert, and B. Raveau, J. Mater. Chem. 22, 18043 (2012).
  46. M. M. Seikh, V. Pralong, V. Caignaert, and B. Raveau, Z. Anorganische Allgemeine Chem. 640, 1141 (2014).
  47. N. Qureshi, M. T. Fernández Díaz, L. C. Chapon, A. Senyshyn, W. Schweika, and M. Valldor, Phys. Rev. B 97, 064404 (2018).

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Phys. Rev. B 102, 134406– Published 6 October, 2020
  • Received 22 July 2020
  • Accepted 14 September 2020
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