Persistent magnetoresistive memory in phase separated manganites
We have studied magnetic and transport properties on different manganese-oxide-based compounds exhibiting phase separation: polycrystalline La5/8-yPryCa3/8MnO3 (y = 0.3) and La1/2Ca1/2Mn1-zFezO3 (z = 0.05), and single crystals of La5/8-yPryCa3/8MnO3 (y∼0.35). Time dependent effects indicate that the...
Guardado en:
| Autores principales: | , , , , , , , , , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03048853_v258-259_n_p293_Levy |
| Aporte de: |
| id |
todo:paper_03048853_v258-259_n_p293_Levy |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_03048853_v258-259_n_p293_Levy2023-10-03T15:21:06Z Persistent magnetoresistive memory in phase separated manganites Levy, P. Parisi, F. Sacanell, J. Granja, L. Quintero, M. Curiale, J. Polla, G. Leyva, G. Freitas, R.S. Ghivelder, L. Acha, C. Koo, T.Y. Cheong, S.-W. Magnetoresistance Manganites Phase separation Ferromagnetism Manganese compounds Phase separation Polycrystalline materials Transport properties Correlated electron systems Magnetoresistance We have studied magnetic and transport properties on different manganese-oxide-based compounds exhibiting phase separation: polycrystalline La5/8-yPryCa3/8MnO3 (y = 0.3) and La1/2Ca1/2Mn1-zFezO3 (z = 0.05), and single crystals of La5/8-yPryCa3/8MnO3 (y∼0.35). Time dependent effects indicate that the fractions of the coexisting phases are dynamically changing in a definite temperature range. We found that in this range the ferromagnetic fraction "f" can be easily tuned by application of low magnetic fields (<1 T). The effect is persistent after the field is turned off; thus, the field remains imprinted in the actual value of "f" and can be recovered through transport measurements. This effect is due both to the existence of a true phase separated equilibrium state with definite equilibrium fraction "f0", and to the slow growth dynamics. The fact that the same global features were found on different compounds and in polycrystalline and single crystalline samples, suggests that the effect is a general feature of some phase separated media. © 2002 Elsevier Science B.V. All rights reserved. Fil:Levy, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Parisi, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sacanell, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Granja, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Quintero, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Curiale, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Acha, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03048853_v258-259_n_p293_Levy |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Magnetoresistance Manganites Phase separation Ferromagnetism Manganese compounds Phase separation Polycrystalline materials Transport properties Correlated electron systems Magnetoresistance |
| spellingShingle |
Magnetoresistance Manganites Phase separation Ferromagnetism Manganese compounds Phase separation Polycrystalline materials Transport properties Correlated electron systems Magnetoresistance Levy, P. Parisi, F. Sacanell, J. Granja, L. Quintero, M. Curiale, J. Polla, G. Leyva, G. Freitas, R.S. Ghivelder, L. Acha, C. Koo, T.Y. Cheong, S.-W. Persistent magnetoresistive memory in phase separated manganites |
| topic_facet |
Magnetoresistance Manganites Phase separation Ferromagnetism Manganese compounds Phase separation Polycrystalline materials Transport properties Correlated electron systems Magnetoresistance |
| description |
We have studied magnetic and transport properties on different manganese-oxide-based compounds exhibiting phase separation: polycrystalline La5/8-yPryCa3/8MnO3 (y = 0.3) and La1/2Ca1/2Mn1-zFezO3 (z = 0.05), and single crystals of La5/8-yPryCa3/8MnO3 (y∼0.35). Time dependent effects indicate that the fractions of the coexisting phases are dynamically changing in a definite temperature range. We found that in this range the ferromagnetic fraction "f" can be easily tuned by application of low magnetic fields (<1 T). The effect is persistent after the field is turned off; thus, the field remains imprinted in the actual value of "f" and can be recovered through transport measurements. This effect is due both to the existence of a true phase separated equilibrium state with definite equilibrium fraction "f0", and to the slow growth dynamics. The fact that the same global features were found on different compounds and in polycrystalline and single crystalline samples, suggests that the effect is a general feature of some phase separated media. © 2002 Elsevier Science B.V. All rights reserved. |
| format |
JOUR |
| author |
Levy, P. Parisi, F. Sacanell, J. Granja, L. Quintero, M. Curiale, J. Polla, G. Leyva, G. Freitas, R.S. Ghivelder, L. Acha, C. Koo, T.Y. Cheong, S.-W. |
| author_facet |
Levy, P. Parisi, F. Sacanell, J. Granja, L. Quintero, M. Curiale, J. Polla, G. Leyva, G. Freitas, R.S. Ghivelder, L. Acha, C. Koo, T.Y. Cheong, S.-W. |
| author_sort |
Levy, P. |
| title |
Persistent magnetoresistive memory in phase separated manganites |
| title_short |
Persistent magnetoresistive memory in phase separated manganites |
| title_full |
Persistent magnetoresistive memory in phase separated manganites |
| title_fullStr |
Persistent magnetoresistive memory in phase separated manganites |
| title_full_unstemmed |
Persistent magnetoresistive memory in phase separated manganites |
| title_sort |
persistent magnetoresistive memory in phase separated manganites |
| url |
http://hdl.handle.net/20.500.12110/paper_03048853_v258-259_n_p293_Levy |
| work_keys_str_mv |
AT levyp persistentmagnetoresistivememoryinphaseseparatedmanganites AT parisif persistentmagnetoresistivememoryinphaseseparatedmanganites AT sacanellj persistentmagnetoresistivememoryinphaseseparatedmanganites AT granjal persistentmagnetoresistivememoryinphaseseparatedmanganites AT quinterom persistentmagnetoresistivememoryinphaseseparatedmanganites AT curialej persistentmagnetoresistivememoryinphaseseparatedmanganites AT pollag persistentmagnetoresistivememoryinphaseseparatedmanganites AT leyvag persistentmagnetoresistivememoryinphaseseparatedmanganites AT freitasrs persistentmagnetoresistivememoryinphaseseparatedmanganites AT ghivelderl persistentmagnetoresistivememoryinphaseseparatedmanganites AT achac persistentmagnetoresistivememoryinphaseseparatedmanganites AT kooty persistentmagnetoresistivememoryinphaseseparatedmanganites AT cheongsw persistentmagnetoresistivememoryinphaseseparatedmanganites |
| _version_ |
1807322050703917056 |