A pulse echo technique was employed to measure the ultrasonic attenuation and velocity in the 120–340 K temperature range on Nd2Cu1−xZnxO4 with x = 0, 0.02 and 0.05. A marked hysteresis in the velocity vs. temperature trend was observed. The Zn doping results in a reduction in the hysteresis loop area. Strong attenuation maxima were observed at 210 and 260 K. The results are discussed in terms of magnetoelastic interaction across the Néel temperature.
Ultrasonic investigation of Nd2Cu1-χZnχO4: magnetoelastic interaction in the antiferromagnetic and paramagnetic state / Bonetti, E.; Campari, E.G.; D'Astuto, M.; Marangolo, M.; Acquarone, M.; Calestani, G.; Francesconi, M.G.. - In: JOURNAL OF ALLOYS AND COMPOUNDS. - ISSN 0925-8388. - STAMPA. - 211-212:(1994), pp. 572-575. (Intervento presentato al convegno 10th International Conference on Internal Friction and Ultrasonic Attenuation in Solids tenutosi a Roma nel 1994) [10.1016/0925-8388(94)90569-X].
Ultrasonic investigation of Nd2Cu1-χZnχO4: magnetoelastic interaction in the antiferromagnetic and paramagnetic state
Bonetti, E.
Primo
Conceptualization
;Campari, E. G.Secondo
Investigation
;Marangolo, M.Ultimo
Validation
;
1994
Abstract
A pulse echo technique was employed to measure the ultrasonic attenuation and velocity in the 120–340 K temperature range on Nd2Cu1−xZnxO4 with x = 0, 0.02 and 0.05. A marked hysteresis in the velocity vs. temperature trend was observed. The Zn doping results in a reduction in the hysteresis loop area. Strong attenuation maxima were observed at 210 and 260 K. The results are discussed in terms of magnetoelastic interaction across the Néel temperature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
