Effect of rare-earth ion local anisotropy on macroscopic magnetic properties of (La0.985Ho0.015)3Ga5SiO14 lagnasite

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Abstract

Experimental and theoretical studies of the magnetic properties of the unique Ising-like paramagnet (La0.985Ho0.015)3Ga5SiO14 have been carried out. We found magnetic anisotropy in strong magnetic field (up to 5 T) rotated in the ab*, b*c and ac planes at low temperatures (T ≤ 5K). We show that the observed magnetization features are connected with the local orientation and distribution of the Ho3+ Ising axes, which may deviate from the symmetry-allowed directions due to Ga/Si random filling in the local environment of the magnetic ions.

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About the authors

A. Yu. Tikhanovskii

Prokhorov General Physics Institute of the Russian Academy of Sciences

Author for correspondence.
Email: tikhanovskii@phystech.edu
Russian Federation, Moscow

V. Yu. Ivanov

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: tikhanovskii@phystech.edu
Russian Federation, Moscow

A. M. Kuzmenko

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: tikhanovskii@phystech.edu
Russian Federation, Moscow

A. A. Mukhin

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: tikhanovskii@phystech.edu
Russian Federation, Moscow

References

  1. Mill B.V., Pisarevsky Y.V. Langasite-type materials: from discovery to present state // Proc. 2000 IEEE/ EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052). IEEE. 2000. P. 133–144. https://doi.org/10.1109/FREQ.2000.887343
  2. Maksimov B.A. et al. Absolute structure of La3Ga5SiO14 langasite crystals // Crystallogr. Reports. 2005. V. 50. № 5. P. 751–758. https://doi.org/10.1134/1.2049391
  3. Bohm J. et al. Czochralski growth and characterization of piezoelectric single crystals with langasite structure: La3Ga5SiO14 (LGS), La3Ga5.5Nb0.5O14 (LGN), and La3Ga5.5Ta0.5O14 (LGT) // J. Cryst. Growth. 1999. V. 204. № 1–2. P. 128–136. https://doi.org/10.1016/S0022-0248(99)00186-4
  4. Sato J. et al. Czochralski growth of RE3Ga5SiO14 (RE=La, Pr, Nd) single crystals for the analysis of the influence of rare earth substitution on piezoelectricity // J. Cryst. Growth. 1998. V. 191. № 4. P. 746–753. https://doi.org/10.1016/S0022-0248(98)00362-5
  5. Iwataki T. et al. Mechanism of the piezoelectricity of langasite based on the crystal structures // J. Eur. Ceram. Soc. 2001. V. 21. № 10–11. P. 1409–1412. https://doi.org/10.1016/S0955-2219(01)00029-2
  6. Marty K. et al. Magnetic and dielectric properties in the langasite-type compounds: A3 B Fe3 D2 O14 (A=Ba, Sr, Ca; B=Ta, Nb, Sb; D=Ge, Si ) // Phys. Rev. B – Condens. Matter Mater. Phys. 2010. V. 81. № 5. P. 1–11. https://doi.org/10.1103/PhysRevB.81.054416
  7. Marty K. et al. Single Domain Magnetic Helicity and Triangular Chirality in Structurally Enantiopure Ba3NbFe3Si2O14 // Phys. Rev. Lett. 2008. V. 101. № 24. P. 247201. https://doi.org/10.1103/PhysRevLett.101.247201
  8. Lee N., Choi Y.J., Cheong S.W. Magnetic control of ferroelectric polarization in a self-formed single magnetoelectric domain of multiferroic Ba3NbFe3Si 2 O14 // Appl. Phys. Lett. 2014. V. 104. № 7. P. 1–5. https://doi.org/10.1063/1.4866187
  9. Narita H. et al. Observation of nonreciprocal directional dichroism via electromagnon resonance in a chiral-lattice helimagnet B a3NbF e3 S i2 O14 // Phys. Rev. B. 2016. V. 94. № 9. https://doi.org/10.1103/PhysRevB.94.094433
  10. Tikhanovskii A.Y. et al. Magnetoelectric phenomena in Fe langasites // Phys. Rev. B. American Physical Society. 2022. V. 105. № 10. P. 104424. https://doi.org/10.1103/PhysRevB.105.104424
  11. Zhou H.D. et al. Partial field-induced magnetic order in the Spin-liquid kagomé Nd3Ga5SiO14 // Phys. Rev. Lett. 2007. V. 99. № 23. P. 1–4. https://doi.org/10.1103/PhysRevLett.99.236401
  12. Zorko A. et al. Easy-Axis Kagome Antiferromagnet: Local-Probe Study of Nd3Ga5SiO14 // Phys. Rev. Lett. 2008. V. 100. № 14. P. 147201. https://doi.org/10.1103/PhysRevLett.100.147201
  13. Bordet P. et al. Magnetic frustration on a Kagomé lattice in R3Ga 5SiO14 langasites with R ≤ Nd, Pr // J. Phys. Condens. Matter. 2006. V. 18. № 22. P. 5147–5153. https://doi.org/10.1088/0953-8984/18/22/014
  14. Simonet V. et al. Hidden magnetic frustration by quantum relaxation in anisotropic Nd langasite // Phys. Rev. Lett. 2008. V. 100. № 23. P. 1–4. https://doi.org/10.1103/PhysRevLett.100.237204
  15. Robert J. et al. Spin-Liquid Correlations in the Nd-Langasite Anisotropic Kagomé Antiferromagnet // Phys. Rev. Lett. 2006. V. 96. № 19. P. 197205. https://doi.org/10.1103/PhysRevLett.96.197205
  16. Zorko A. et al. Ground State of the easy-axis rare-earth kagome langasite Pr3Ga5SiO14 // Phys. Rev. Lett. 2010. V. 104. № 5. P. 3–6. https://doi.org/10.1103/PhysRevLett.104.057202
  17. Weymann L. et al. Unusual magnetoelectric effect in paramagnetic rare-earth langasite // npj Quantum Mater. 2020. V. 5. № 1. P. 61. https://doi.org/10.1038/s41535-020-00263-9
  18. Звездин А.К., Матвеев В.М., Мухин А.А., Попов А.И. Редкоземельные ионы в магнитно упорядоченных кристаллах. М.: Наука, Гл. ред. физ.-мат. лит-ры, 1985. 296 с.

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2. Fig. 1. Angular dependences of magnetization (La0.985Ho0.015)3Ga5SiO14 at a temperature of 5 K and a rotation of a field of 5 T in the planes ab*(a), ac (b) and b*c (c). Points – experiment, solid line – theory.

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3. Fig. 2. Schematic representation of the Isingian axes of Ho3+ ions in (La0.985Ho0.015)3Ga5SiO14: α is the deviation of the Isingian axis from the plane ab (shown in position 2 for convenience), β is the deviation of the projection of the Isingian axis on the plane b*c from the c axis. The set of Isingian axes defined in this way, connected by the symmetry operations C2 and C3, restores the symmetry of P321.

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4. Fig. 3. Field dependences of magnetization (La0.985Ho0.015)3Ga5SiO14 at temperatures of 1.9 K (a), 5 K (b) and magnetic field orientations H|| a, b*, c and c39ob* – corresponding to the minimum on the angular dependence, when the magnetic field rotates in the b*c plane. Open symbols are an experiment, a solid line is a theory.

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