X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films

Glas M, Sterwerf C, Schmalhorst J-M, Ebke D, Jenkins C, Arenholz E, Reiss G (2013)
Journal Of Applied Physics 114(18).

Journal Article | Published | English

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Abstract
Tetragonally distorted Mn3-xGax thin films with 0.1 < x < 2 show a strong perpendicular magnetic anisotropy and low magnetization and thus have the potential to serve as electrodes in spin transfer torque magnetic random access memory. Because a direct capping of these films with MgO is problematic due to oxide formation, we examined the influence of a CoFeB interlayer and of two different deposition methods for the MgO barrier on the formation of interfacial Mn-O for Mn62Ga38 by element specific X-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD). A highly textured L1(0) crystal structure of the Mn-Ga films was verified by X-ray diffraction measurements. For samples with e-beam evaporated MgO barrier no evidence for Mn-O was found whereas in samples with magnetron sputtered MgO, Mn-O was detected, even for the thickest interlayer thickness. Both XAS and XMCD measurements showed an increasing interfacial Mn-O amount with decreasing CoFeB interlayer thickness. Additional element specific full hysteresis loops determined an out-of-plane magnetization axis for the Mn and Co, respectively. (C) 2013 AIP Publishing LLC.
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Glas M, Sterwerf C, Schmalhorst J-M, et al. X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films. Journal Of Applied Physics. 2013;114(18).
Glas, M., Sterwerf, C., Schmalhorst, J. - M., Ebke, D., Jenkins, C., Arenholz, E., & Reiss, G. (2013). X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films. Journal Of Applied Physics, 114(18).
Glas, M., Sterwerf, C., Schmalhorst, J. - M., Ebke, D., Jenkins, C., Arenholz, E., and Reiss, G. (2013). X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films. Journal Of Applied Physics 114.
Glas, M., et al., 2013. X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films. Journal Of Applied Physics, 114(18).
M. Glas, et al., “X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films”, Journal Of Applied Physics, vol. 114, 2013.
Glas, M., Sterwerf, C., Schmalhorst, J.-M., Ebke, D., Jenkins, C., Arenholz, E., Reiss, G.: X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films. Journal Of Applied Physics. 114, (2013).
Glas, Manuel, Sterwerf, Christian, Schmalhorst, Jan-Michael, Ebke, Daniel, Jenkins, C., Arenholz, E., and Reiss, Günter. “X-ray absorption spectroscopy and magnetic circular dichroism studies of L1(0)-Mn-Ga thin films”. Journal Of Applied Physics 114.18 (2013).
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