Magnetodielectric effects from spin fluctuations in isostructural ferromagnetic and antiferromagnetic systems

Physical Review Letters

Volumn 91, Issue 25, 2003, Pages

  Lawes, G ^a   Ramirez, A P ^a,b   Varma, C M ^b   Subramanian, M A ^c  

^a LOS ALAMOS NATIONAL LABORATORY   (United States)

^b LUCENT TECHNOLOGIES   (United States)

^c DUPONT COMPANY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CAPACITANCE; ELECTRON TRANSITIONS; FERROMAGNETIC MATERIALS; FREQUENCIES; HIGH TEMPERATURE EFFECTS; MAGNETOELECTRIC EFFECTS; PARAMAGNETIC MATERIALS; PERMITTIVITY; PHONONS; POLARIZATION; SELENIUM COMPOUNDS; TELLURIUM COMPOUNDS;

ISOSTRUCTURAL COMPOUNDS; MAGNETOCAPACITANCE; SPIN FLUCTUATIONS;

ANTIFERROMAGNETIC MATERIALS;

EID: 0942288723     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.91.257208     Document Type: Article

References (19)

1. A.P. Ramirez, J. Phys. Condens. Matter 9, 8171 (1997).10.1088/0953-8984/9/39/005
2. S. Jin, T.H. Tiefel, M. McCormack, R.A. Fastnacht, R. Ramesh, and L.H. Chen, Science 264, 413 (1994).
3. Yu.Y. Tomashpolskii, Yu.N. Venvetsev, and G.S. Zhdanov, Sov. Phys. JETP 19, 1294 (1964).
4. Hans Schmid, Int. J. Magn. 4, 337 (1973).
5. R.E. Cohen, J. Phys. Chem. Solids 61, 139 (2000).10.1016/S0022-3697(99)00272-3
6. V.J. Folen, G.T. Rado, and E.W. Stalder, Phys. Rev. Lett. 6, 607 (1961); 10.1103/PhysRevLett.6.607
7. G.T. Rado and V.J. Folen, Phys. Rev. Lett. 7, 310 (1961).10.1103/PhysRevLett.7.310
8. H. Wiegelmann, A.A. Stepanov, I.M. Vitebsky, A.G.M. Jansen, and P. Wyder, Phys. Rev. B 49, 10?039 (1994).10.1103/PhysRevB.49.10039
9. Z.J. Huang, Y. Cao, Y.Y. Sun, Y.Y. Xue, and C.W. Chu, Phys. Rev. B 56, 2623 (1997).10.1103/PhysRevB.56.2623
10. T. Katsufuji and H. Takagi, Phys. Rev. B 64, 054415 (2001).10.1103/PhysRevB.64.054415
11. T. Kimura, S. Kawamoto, I. Yamada, M. Azuma, M. Takano, and Y. Tokura, Phys. Rev. B 67, 180401 (2003).10.1103/PhysRevB.67.180401
12. Nicola A. Hill, J. Phys. Chem. B 104, 6694 (2000).10.1021/jp000114x
13. A. Moreira dos Santos, S. Parashar, A.R. Raju, Y.S. Zhao, A.K.Cheetham, and C.N.R. Rao, Solid State Commun.SSCOA4 122, 49 (2002).
14. The term magnetoelectric is reserved for the special symmetries where a free energy invariant proportional to (Formula presented) is allowed [see L.D. Landau, E.M. Lifshitz, and L.P. Pitaevskii, Electrodynamics of Continuous Media (Pergamon, New York, 1984)]. For the more general couplings, we introduce the term magnetodielectric effects.
15. M.A. Subramanian, A.P. Ramirez, and W.J. Marshall, Phys. Rev. Lett. 82, 1558 (1999).10.1103/PhysRevLett.82.1558
16. To be completely correct, the expansion in Eq.� 5 should take into account the superexchange nature of (Formula presented) and in the expansion, consider the variations of (Formula presented) with the distances between the magnetic ions and the intermediate diamagnetic ions. However, for the present purposes, Eq.� 5 is sufficient.
17. Michael E. Fisher and J.S. Langer, Phys. Rev. Lett. 20, 665 (1968).10.1103/PhysRevLett.20.665
18. S.A. Alexander, J.S. Helman, and I. Balberg, Phys. Rev. B 13, 304 (1976).
19. T.V. Ramakrishnan and C.M. Varma, Phys. Rev. B 24, 137 (1981).10.1103/PhysRevB.24.137