TY - JOUR
T1 - Ferromagnetic resonance and magnetization studies on ferrimagnetic double perovskites A2FeReO6 (A = Ca, Sr, Ba)
AU - Lofland, S. E.
AU - Scabarozi, T.
AU - Kale, S.
AU - Bhagat, S. M.
AU - Ogale, S. B.
AU - Venkatesan, T.
AU - Greene, R. L.
AU - Gopalakrishnan, J.
AU - Ramesha, K.
N1 - Funding Information:
Manuscript received October 13, 2000. This work was supported in part by NSF-MRSEC under Grant no. DMR—80008, and the work at Bangalore was supported by the Department of Science and Technology, Government of India. S. E. Lofland is with the Department of Chemistry and Physics, Rowan University, Glassboro, NJ 08028 USA and the Department of Physics, University of Maryland, College Park, MD 20742 USA (e-mail: [email protected]). T. Scabarozi is with the Department of Chemistry and Physics, Rowan University, Glassboro, NJ 08028 USA (e-mail: [email protected]). S. M. Bhagat is with the Department of Physics, University of Maryland, College Park, MD 20742 USA (e-mail: [email protected]). S. Kale is with Fergusson College, Pune 411004, India (email: [email protected]). S. B. Ogale is with the Department of Materials Engineering, University of Maryland, College Park, MD 20742 USA (e-mail: [email protected]). T. Venkatesan is with the Departments of Physics and Electrical Engineering, University of Maryland, College Park, MD 20742 USA (e-mail: [email protected]). R. L. Greene is with the Center for Superconductivity Research, University of Maryland, College Park, MD 20742 USA (e-mail: [email protected]). J. Gopalakrishnan and K. Ramesha are with the Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India. Publisher Item Identifier S 0018-9464(01)07254-5.
PY - 2001/7
Y1 - 2001/7
N2 - We present the results of an investigation of the magnetic properties A2FeReO6 (A = Ca, Sr, Ba). We have studied the magnetization, high-temperature susceptibility and the ferromagnetic resonance response. The Ba and Sr systems are conducting while the Ca material is an insulator. The ordering temperature of the Ca materials is highest (∼ 540K) and decreases to 315 K for the Ba system. The high-temperature susceptibilit suggests a large moment, and the Curie-Weiss temperature is very close to the ordering temperature, as expected for a simple ferromagnet, although the ferromagnetic moment is somewhat less than expected. The spin dynamics are rather peculiar: the ferromagnetic resonance results suggest a magnetically inhomogeneous material. We discuss these results in terms J of cation disorder.
AB - We present the results of an investigation of the magnetic properties A2FeReO6 (A = Ca, Sr, Ba). We have studied the magnetization, high-temperature susceptibility and the ferromagnetic resonance response. The Ba and Sr systems are conducting while the Ca material is an insulator. The ordering temperature of the Ca materials is highest (∼ 540K) and decreases to 315 K for the Ba system. The high-temperature susceptibilit suggests a large moment, and the Curie-Weiss temperature is very close to the ordering temperature, as expected for a simple ferromagnet, although the ferromagnetic moment is somewhat less than expected. The spin dynamics are rather peculiar: the ferromagnetic resonance results suggest a magnetically inhomogeneous material. We discuss these results in terms J of cation disorder.
UR - https://www.scopus.com/pages/publications/0035386594
UR - https://www.scopus.com/pages/publications/0035386594#tab=citedBy
U2 - 10.1109/20.951109
DO - 10.1109/20.951109
M3 - Conference article
AN - SCOPUS:0035386594
SN - 0018-9464
VL - 37
SP - 2153
EP - 2155
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 4 I
T2 - 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag)
Y2 - 7 January 2001 through 11 January 2001
ER -