Magnetic properties of sputtered permalloy/molibdenum multilayers

Romera Rabasa, Miguel and Maicas Ramos, Marco Cesar and Ranchal Sánchez, Rocío and Ciudad del Río Pérez, David and López, E. and Sánchez Sánchez, Pedro (2008). Magnetic properties of sputtered permalloy/molibdenum multilayers. In: "IEEE International Magnetics Conference. INTERMAG 2008", 04/05/2008-08/05/2008, Madrid, España.

Description

Title: Magnetic properties of sputtered permalloy/molibdenum multilayers
Author/s:
  • Romera Rabasa, Miguel
  • Maicas Ramos, Marco Cesar
  • Ranchal Sánchez, Rocío
  • Ciudad del Río Pérez, David
  • López, E.
  • Sánchez Sánchez, Pedro
Item Type: Presentation at Congress or Conference (Poster)
Event Title: IEEE International Magnetics Conference. INTERMAG 2008
Event Dates: 04/05/2008-08/05/2008
Event Location: Madrid, España
Title of Book: Selected Papers From the International Magnetics Conference
Date: 2008
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Física Aplicada a las Tecnologías de la Información [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this work we study the magnetic properties of Permalloy (Py: Fe20Ni80) films grown as multilayers with thin Molibdenum (Mo) spacers, in order to optimize it for sensor applications. Properties like permabillity or linearity of the loops can be controlled by growing Py as a multilayer with alternating perpendicular anisotropies [2]. However for thicknesses over 180 nm sputtered Py films develop perpendicular anisotropy (induced by the columnar morphology of the sputtered films) and the magnetic properties degrade notably [3]. Both coercive and saturating fields are nearly 10 times bigger than those measured for thinner films. Nevertheless, we found that it is possible to obtain low coercivity and high permability if thick Py films are grown as multilayers with a non-magnetic spacer between magnetic layers. In addition, we studied the effect of the layers thicknesses in the coercive field which is minimum for a Py thicknesses about 30 nm.

More information

Item ID: 3946
DC Identifier: http://oa.upm.es/3946/
OAI Identifier: oai:oa.upm.es:3946
Official URL: http://www.intermagconference.com/intermag2008/index.htm
Deposited by: Memoria Investigacion
Deposited on: 10 Sep 2010 08:38
Last Modified: 20 Apr 2016 13:21
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