Table 2 Comparison of flexible PMA structures.

From: Barium hexaferrite/muscovite heteroepitaxy with mechanically robust perpendicular magnetic anisotropy

Structure

Origin of PMA

Minimum bending radius (mm)

Endurance temperature (K)

Anisotropy energy (106 erg/cm3)

Ref.

Pt/ionic gel/Pt/(Co/Pt)X/Ta/muscovite

Co/Pt

5

<400a

3.16 (Bent)

25

Ta/Pt/CoFeB/Pt/PI

CoFeB/Pt

<10

<700

Not mentionedb

26

Ta/MgO/Co/Pt/Ta/PENC/PEN

Co/Pt

±20–30

<550

Not mentionedc

27

Pt/Co/Pt/paper

Co/Pt

Not mentionedd

<600

Not mentionede

28

[Co/Pd]2/Cu/Co/[Co/Pd]3/Ru/[Co/Pd]4/PEN

Co/Pd

3.5

<550

Not mentionedf

29

BaM/muscovite

Epitaxial BaM film

3.5

<726

2.83

This work

  1. aBecause of the polymers inside the ionic gel, high temperature may lead to the malfunction of the structure.
  2. bThe remanent magnetization and squareness ratio retain under a range of bending radii, showing the robust characteristic of the structure.
  3. cThe channel resistance is varied ~2% under the bending radius from 20 mm to −30mm.
  4. dThe structure displays the PMA with a concave shape.
  5. eAlthough the OOP hysteresis loops are revealed, the anomalous Hall effect is more emphasized in this study.
  6. fThe MR ratio remains constant when the sample is bent to 3.5 mm.
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