Sahana, M. ; Venimadhav, A. ; Hegde, M. S. ; Nenkov, K. ; Robler, U. K. ; Dorr, K. ; Muller, K. -H. (2003) Magnetic properties and specific heat of LaMn1-xTixO3+δ (0 <x ≤0.2) Journal of Magnetism and Magnetic Materials, 260 (3). pp. 361-370. ISSN 0304-8853
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Official URL: http://dx.doi.org//10.1016/S0304-8853(02)01341-0
Related URL: http://dx.doi.org/10.1016/S0304-8853(02)01341-0
Abstract
We present a magnetic study of the insulating perovskite LaMn1-xTixO3+δ (0<x≤0.2) including measurements of magnetization, susceptibility, and magnetic relaxation. The Curie temperature was found to decrease with increasing content of Ti. Two distinct magnetic transitions, irreversibility, non-exponential relaxation and aging effects confirm a reentrant spin-glass state for x=0.2. The time decay of the magnetization has an algebraic functional form for times up to 2 h. The specific heat also displays characteristic features of a spin-glass system by a linear low-temperature dependence and a broadened peak near the temperature of the reentrant transition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Manganites; Re-entrant Spin-glass; Specific Heat |
| ID Code: | 16183 |
| Deposited On: | 15 Nov 2010 14:04 |
| Last Modified: | 03 Jun 2011 07:37 |
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