DOI: 10.1557/proc-384-391. Effects of Interface Intermixing on the Magnetoresistance of Spin Valves with Uncoupled Co-Layers

Effects of Interface Intermixing on the Magnetoresistance of Spin Valves with Uncoupled Co-Layers

10.1557/proc-384-391

Crossref journal-article

Springer Science and Business Media LLC

MRS Proceedings (297)

Abstract

ABSTRACTWe have studied the effect of an artificially intermixed region grown at the interfaces of Co/Cu spin valves with uncoupled layers. Two different structures are used: exchange-biased spin valves and engineered spin valves in which two layers are antiferromagnetically coupled and a third layer, on top of this system, is not coupled to the other two. It is shown that structural effects, induced by variation of the deposition parameters and by the intermixing can play an important role. Since the present study uses sputtered layers an intrinsic initial intermixing of 4-5Å is already present. For both types of spin valves Gp, ΔG and ΔR/R all show a gradual decrease when the nominal thickness of the total intermixed region is enlarged from 0 to 36Å. Also when the initial degree of intermixing is decreased by sputtering at higher Arpressure, Gp, ΔG and ΔR/R still show a gradual decrease as a function of intermixed layer thickness. Combined with the fact that there is no difference between an intermixed region of thickness t at one Co/Cu interface or intermixed regions of thickness t/2 at two interfaces, this indicates that the electron scattering in the intermixed region is predominantly spin independent, although this region preserves a magnetic moment.

Bibliography

Willekens, M. M. H., Rijks, TH. G. S. M., Swagten, H. J. M., & Jonge, W. J. M. D. (1995). Effects of Interface Intermixing on the Magnetoresistance of Spin Valves with Uncoupled Co-Layers. MRS Proceedings, 384.

Authors 4

M.M.H. Willekens (first)
TH.G.S.M. Rijks (additional)
H.J.M. Swagten (additional)
W.J.M. De Jonge (additional)

References 11 Referenced 3

{'key': 'S1946427400323582_ref010', 'first-page': '747', 'volume-title': 'Ferromagnetic Materials', 'volume': '3', 'author': 'Campbell', 'year': '1982'} / Ferromagnetic Materials by Campbell (1982)
10.1063/1.1728728
10.1063/1.354356
[7] Willekens , submitted to J. Appl. Phys.
10.1149/1.2428700 / Constitution of Binary Alloys by Hansen (1958)
10.1016/0304-8853(91)90310-7
10.1103/PhysRevB.49.368
10.1103/PhysRevB.43.8089
[8] Rijks , Paper submitted to the INTERMAG '95 San Antonio, Texas.
10.1103/PhysRevLett.71.1641
10.1063/1.348231

Dates

Type	When
Created	14 years, 4 months ago (April 5, 2011, 8:44 p.m.)
Deposited	4 years, 5 months ago (Feb. 24, 2021, 3:42 p.m.)
Indexed	3 years, 4 months ago (April 1, 2022, 1:46 a.m.)
Issued	30 years, 7 months ago (Jan. 1, 1995)
Published	30 years, 7 months ago (Jan. 1, 1995)
Published Online	14 years, 6 months ago (Feb. 15, 2011)
Published Print	30 years, 7 months ago (Jan. 1, 1995)

Funders 0

None

BibTeX

@article{Willekens_1995, title={Effects of Interface Intermixing on the Magnetoresistance of Spin Valves with Uncoupled Co-Layers}, volume={384}, ISSN={1946-4274}, url={http://dx.doi.org/10.1557/proc-384-391}, DOI={10.1557/proc-384-391}, journal={MRS Proceedings}, publisher={Springer Science and Business Media LLC}, author={Willekens, M.M.H. and Rijks, TH.G.S.M. and Swagten, H.J.M. and Jonge, W.J.M. De}, year={1995} }

JSON

{
  "indexed": {
    "date-parts": [
      [
        2022,
        4,
        1
      ]
    ],
    "date-time": "2022-04-01T05:46:13Z",
    "timestamp": 1648791973701
  },
  "reference-count": 11,
  "publisher": "Springer Science and Business Media LLC",
  "license": [
    {
      "start": {
        "date-parts": [
          [
            2011,
            2,
            15
          ]
        ],
        "date-time": "2011-02-15T00:00:00Z",
        "timestamp": 1297728000000
      },
      "content-version": "unspecified",
      "delay-in-days": 5889,
      "URL": "https://www.cambridge.org/core/terms"
    }
  ],
  "content-domain": {
    "domain": [],
    "crossmark-restriction": false
  },
  "published-print": {
    "date-parts": [
      [
        1995
      ]
    ]
  },
  "abstract": "<jats:title>ABSTRACT</jats:title><jats:p>We have studied the effect of an artificially intermixed region grown at the interfaces of Co/Cu spin valves with uncoupled layers. Two different structures are used: exchange-biased spin valves and engineered spin valves in which two layers are antiferromagnetically coupled and a third layer, on top of this system, is not coupled to the other two. It is shown that structural effects, induced by variation of the deposition parameters and by the intermixing can play an important role. Since the present study uses sputtered layers an intrinsic initial intermixing of 4-5\u00c5 is already present. For both types of spin valves G<jats:sub>p</jats:sub>, \u0394G and \u0394R/R all show a gradual decrease when the nominal thickness of the total intermixed region is enlarged from 0 to 36\u00c5. Also when the initial degree of intermixing is decreased by sputtering at higher Arpressure, G<jats:sub>p</jats:sub>, \u0394G and \u0394R/R still show a gradual decrease as a function of intermixed layer thickness. Combined with the fact that there is no difference between an intermixed region of thickness <jats:italic>t</jats:italic> at one Co/Cu interface or intermixed regions of thickness <jats:italic>t</jats:italic>/2 at two interfaces, this indicates that the electron scattering in the intermixed region is predominantly spin <jats:italic>in</jats:italic>dependent, although this region preserves a magnetic moment.</jats:p>",
  "DOI": "10.1557/proc-384-391",
  "type": "journal-article",
  "created": {
    "date-parts": [
      [
        2011,
        4,
        6
      ]
    ],
    "date-time": "2011-04-06T00:44:21Z",
    "timestamp": 1302050661000
  },
  "source": "Crossref",
  "is-referenced-by-count": 3,
  "title": "Effects of Interface Intermixing on the Magnetoresistance of Spin Valves with Uncoupled Co-Layers",
  "prefix": "10.1557",
  "volume": "384",
  "author": [
    {
      "given": "M.M.H.",
      "family": "Willekens",
      "sequence": "first",
      "affiliation": []
    },
    {
      "given": "TH.G.S.M.",
      "family": "Rijks",
      "sequence": "additional",
      "affiliation": []
    },
    {
      "given": "H.J.M.",
      "family": "Swagten",
      "sequence": "additional",
      "affiliation": []
    },
    {
      "given": "W.J.M. De",
      "family": "Jonge",
      "sequence": "additional",
      "affiliation": []
    }
  ],
  "member": "297",
  "published-online": {
    "date-parts": [
      [
        2011,
        2,
        15
      ]
    ]
  },
  "reference": [
    {
      "key": "S1946427400323582_ref010",
      "first-page": "747",
      "volume-title": "Ferromagnetic Materials",
      "volume": "3",
      "author": "Campbell",
      "year": "1982"
    },
    {
      "key": "S1946427400323582_ref005",
      "doi-asserted-by": "publisher",
      "DOI": "10.1063/1.1728728"
    },
    {
      "key": "S1946427400323582_ref002",
      "doi-asserted-by": "publisher",
      "DOI": "10.1063/1.354356"
    },
    {
      "key": "S1946427400323582_ref007",
      "unstructured": "[7] Willekens , submitted to J. Appl. Phys."
    },
    {
      "key": "S1946427400323582_ref004",
      "doi-asserted-by": "crossref",
      "DOI": "10.1149/1.2428700",
      "volume-title": "Constitution of Binary Alloys",
      "author": "Hansen",
      "year": "1958"
    },
    {
      "key": "S1946427400323582_ref001",
      "doi-asserted-by": "publisher",
      "DOI": "10.1016/0304-8853(91)90310-7"
    },
    {
      "key": "S1946427400323582_ref003",
      "doi-asserted-by": "publisher",
      "DOI": "10.1103/PhysRevB.49.368"
    },
    {
      "key": "S1946427400323582_ref006",
      "doi-asserted-by": "publisher",
      "DOI": "10.1103/PhysRevB.43.8089"
    },
    {
      "key": "S1946427400323582_ref008",
      "unstructured": "[8] Rijks , Paper submitted to the INTERMAG '95 San Antonio, Texas."
    },
    {
      "key": "S1946427400323582_ref009",
      "doi-asserted-by": "publisher",
      "DOI": "10.1103/PhysRevLett.71.1641"
    },
    {
      "key": "S1946427400323582_ref011",
      "doi-asserted-by": "publisher",
      "DOI": "10.1063/1.348231"
    }
  ],
  "container-title": "MRS Proceedings",
  "original-title": [],
  "language": "en",
  "link": [
    {
      "URL": "https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1946427400323582",
      "content-type": "unspecified",
      "content-version": "vor",
      "intended-application": "similarity-checking"
    }
  ],
  "deposited": {
    "date-parts": [
      [
        2021,
        2,
        24
      ]
    ],
    "date-time": "2021-02-24T20:42:32Z",
    "timestamp": 1614199352000
  },
  "score": 1,
  "resource": {
    "primary": {
      "URL": "http://link.springer.com/10.1557/PROC-384-391"
    }
  },
  "subtitle": [],
  "short-title": [],
  "issued": {
    "date-parts": [
      [
        1995
      ]
    ]
  },
  "references-count": 11,
  "alternative-id": [
    "S1946427400323582"
  ],
  "URL": "http://dx.doi.org/10.1557/PROC-384-391",
  "relation": {},
  "ISSN": [
    "0272-9172",
    "1946-4274"
  ],
  "subject": [],
  "container-title-short": "MRS Proc.",
  "published": {
    "date-parts": [
      [
        1995
      ]
    ]
  },
  "article-number": "391"
}