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rf Susceptibility of La1−xSrxMnO3 Single Crystals: Magnetic Signatures of Structural Changes

Published online by Cambridge University Press:  10 February 2011

P.V. Parimi ,
H. Srikanth ,
M. Bailleul ,
S. Sridhar ,
R. Suryanarayanan ,
L. Pinsard  and
A. Revcolevschi
P.V. Parimi
Affiliation:
Department of Physics, Northeastern University, Boston, MA 02115
H. Srikanth
Affiliation:
Department of Physics, Northeastern University, Boston, MA 02115
M. Bailleul
Affiliation:
Department of Physics, Northeastern University, Boston, MA 02115
S. Sridhar
Affiliation:
Department of Physics, Northeastern University, Boston, MA 02115
R. Suryanarayanan
Affiliation:
Laboratoire de Chimie des Solides, UA 446, Universitě Paris-Sud, Orsay 91405, France
L. Pinsard
Affiliation:
Department of Physics, Northeastern University, Boston, MA 02115
A. Revcolevschi
Affiliation:
Laboratoire de Chimie des Solides, UA 446, Universitě Paris-Sud, Orsay 91405, France
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Abstract

A sensitive tunnel diode oscillator (TDO) technique operating at 4MHz is used to probe the dynamic response of La1−xSrxMnO3 single crystals for x = 0.125, 0.175, 0.28 and 0.33 doping. Systematics of the measured change in reactance (δX) as a function of temperature (30K < T < 320K) and DC magnetic field (0 < H < 6kOe) reveal distinct temperature and field scales associated with the dynamic response of spin. It is notable that these features are far more striking than the corresponding features in static measurements. The results are discussed in the context of structural changes leading to polaron ordering.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 602: Symposium JJ – Magnetoresistive Oxides & Related Materials , 1999 , 137
Copyright
Copyright © Materials Research Society 2000

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