Table 1 Samples and their magnetic property values.

From: Controlling spin pumping into superconducting Nb by proximity-induced spin-triplet Cooper pairs

Sample Structure

Ref

Easy axis μ0Hc (mT)

Hard axis μ0Hc (mT)

Easy axis Mr/Ms

Hard axis Mr/Ms

Ms (103 A/m)

KVSM (J/m3)

KFMR (J/m3)

Nb(32)/Cr(1)/Fe(6)/Cr(1)/Nb(32)

32Cr

7.4

1.1

0.93 ± 0.03

0.19 ± 0.01

1680 ± 37

8193 ± 1359

9008 ± 158

Nb(32)/Fe(6)/Nb(32)

32NCr

8.3

3.4

0.90 ± 0.04

0.50 ± 0.02

1500 ± 41

7438 ± 1172

5060 ± 73

Nb(31)/Cr(1)/Fe(6)/Cr(1)/Nb(31)

31Cr

9.8

6.0

0.95 ± 0.04

0.68 ± 0.03

1480 ± 38

5153 ± 748

6030 ± 141

Nb(31)/Fe(6)/Nb(31)

31NCr

9.4

9.0

0.97 ± 0.04

0.79 ± 0.03

1250 ± 37

1348 ± 200

3600 ± 77

Nb(30)/Cr(1)/Fe(6)/Cr(1)/Nb(30)

30Cr

6.7

3.6

0.91 ± 0.03

0.53 ± 0.02

1500 ± 37

4087 ± 713

5470 ± 74

Nb(25)/Cr(1)/Fe(6)/Cr(1)/Nb(25)

25Cr

5.2

2.2

0.88 ± 0.03

0.40 ± 0.01

1410 ± 35

2175 ± 430

4320 ± 71

  1. Kvsm and KFMR are the anisotropy constant values obtained from the vibrating sample magnetometer and the ferromagnetic resonance measurements respectively. μ0Hc, Mr, and Ms are the coercive magnetic field, the remanent magnetisation and the saturation magnetisation respectively. The error in μ0Hc is ±0.1 mT from measurement precision. The error in Ms is from propagating errors in measuring the Fe volume and saturation moment. The error in KFMR is from the error in the Kittel fits to the frequency dependent resonance magnetic field μ0Hres.
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