Rajendran, V. ; Muthu Kumaran, S. ; Sivasubramanian, V. ; Jayakumar, T. ; Baldev Raj, (2003) Anomalies in ultrasonic velocity and attenuation in Nd0.67Sr0.33MnO3 perovskite Physica B: Condensed Matter, 336 (3-4). pp. 261-266. ISSN 0921-4526
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09214...
Related URL: http://dx.doi.org/10.1016/S0921-4526(03)00256-4
Abstract
Temperature dependence of ultrasonic and electrical properties of Nd0.67Sr0.33MnO3 perovskite has been investigated based on the proposed phase diagram employing ultrasonic parameters. We demonstrate the ferromagnetic state below ferromagnetic phase transition temperature TC (≈234 K) and a transition from charge disordered ferromagnetic (FM) metal to charge ordered antiferromagnetic (AFM) insulating state around charge ordering temperature TCO (≈194 K). The existence of spin-phonon interaction caused by a linear magnetostriction and electron-phonon interactio- originating from the Jahn-Teller effect have been discussed based on the observed anomalies in ultrasonic parameters, which arise from the competition between ferromagnetic and antiferromagnetic interactions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Nd0.67Sr0.33MnO3 Perovskite; Ultrasonic Velocity; Attenuation; Ferromagnetic Phase Transition Temperature; Charge Ordering Temperature; Electron-phonon Interaction; Spin-phonon Interaction |
| ID Code: | 40332 |
| Deposited On: | 23 May 2011 12:55 |
| Last Modified: | 23 May 2011 12:55 |
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