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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Levy, Pablo Eduardo, Parisi, Francisco Eduardo Alberto, Sacanell, Joaquín Gonzalo, Granja, Leticia Paula, Quintero, Mariano Horacio, Curiale, Carlos Javier, Acha, Carlos Enrique
Publicado:	2003
Materias:	Magnetoresistance Manganites Phase separation Ferromagnetism Manganese compounds Polycrystalline materials Transport properties Correlated electron systems
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v258-259_n_p293_Levy http://hdl.handle.net/20.500.12110/paper_03048853_v258-259_n_p293_Levy
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03048853_v258-259_n_p293_Levy
record_format	dspace
spelling	paper:paper_03048853_v258-259_n_p293_Levy2023-06-08T15:30:11Z Persistent magnetoresistive memory in phase separated manganites Levy, Pablo Eduardo Parisi, Francisco Eduardo Alberto Sacanell, Joaquín Gonzalo Granja, Leticia Paula Quintero, Mariano Horacio Curiale, Carlos Javier Acha, Carlos Enrique 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. 2003 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v258-259_n_p293_Levy 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, Pablo Eduardo Parisi, Francisco Eduardo Alberto Sacanell, Joaquín Gonzalo Granja, Leticia Paula Quintero, Mariano Horacio Curiale, Carlos Javier Acha, Carlos Enrique 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.
author	Levy, Pablo Eduardo Parisi, Francisco Eduardo Alberto Sacanell, Joaquín Gonzalo Granja, Leticia Paula Quintero, Mariano Horacio Curiale, Carlos Javier Acha, Carlos Enrique
author_facet	Levy, Pablo Eduardo Parisi, Francisco Eduardo Alberto Sacanell, Joaquín Gonzalo Granja, Leticia Paula Quintero, Mariano Horacio Curiale, Carlos Javier Acha, Carlos Enrique
author_sort	Levy, Pablo Eduardo
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
publishDate	2003
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v258-259_n_p293_Levy http://hdl.handle.net/20.500.12110/paper_03048853_v258-259_n_p293_Levy
work_keys_str_mv	AT levypabloeduardo persistentmagnetoresistivememoryinphaseseparatedmanganites AT parisifranciscoeduardoalberto persistentmagnetoresistivememoryinphaseseparatedmanganites AT sacanelljoaquingonzalo persistentmagnetoresistivememoryinphaseseparatedmanganites AT granjaleticiapaula persistentmagnetoresistivememoryinphaseseparatedmanganites AT quinteromarianohoracio persistentmagnetoresistivememoryinphaseseparatedmanganites AT curialecarlosjavier persistentmagnetoresistivememoryinphaseseparatedmanganites AT achacarlosenrique persistentmagnetoresistivememoryinphaseseparatedmanganites
_version_	1768545418534191104

Persistent magnetoresistive memory in phase separated manganites

Ejemplares similares