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A study on pulsed laser deposited metallic spin valves

Ghoshal, Sayak and Kumar, Anil PS (2013) A study on pulsed laser deposited metallic spin valves. In: Proceedings of the 57th DAE Solid State Physics Symposium 2012, 3–7 December 2012, Indian Institute of Technology, Bombay, Mumbai, India, pp. 1166-1167.

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Official URL: http://dx.doi.org/10.1063/1.4791463

Abstract

In the recent past conventional Spin Valve (SV) structures are gaining growing interest over Tunneling Magneto-resistance (TMR) because of its preference due to low RA product in hard disc read head sensor applications. Pulsed Laser Deposited (PLD) SV and Pseudo Spin Valve (PSV) samples are grown at room temperature with moderately high MR values using simple FM/NM/FM/AFM structure. Although PLD is not a popular technique to grow metallic SVs because of expected large intermixing of the interfaces, particulate formation, still by suitably adjusting the deposition parameters we could get exchange bias (EB) as well as 2-3% MR of these SVs in the Current In Plane (CIP) geometry. Exchange Bias, which sets in even without applying magnetic field during deposition observed by using SQUID magnetometry as well as by MR measurements. Angular variation of the MR reveals four-fold anisotropy of the hard layer (Co) which becomes two-fold in presence of an adjacent AFM layer.

Item Type: Conference Paper
Additional Information: 57th DAE Solid State Physics Symposium, Indian Inst Technol, Bombay, INDIA, DEC 03-07, 2012
Keywords: Spin Valve; CIP Magneto-Resistance; Pulsed Laser Deposition
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Francis Jayakanth
Date Deposited: 26 Jun 2013 10:10
Last Modified: 26 Jun 2013 10:11
URI: http://eprints.iisc.ac.in/id/eprint/46771

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