We measured the normal-state Hall effect on the polycrystal of YBa
2(Cu
1-xM
x)
3O
y (M=Fe, Co) prepared by two kinds of heat treatments. The synthesized YBa
2 (Cu
1-xM
x)
3O
y (M=Fe, Co) was slowly cooled from 890°C in air. Some of them were annealed below 400°C in O
2 gas (sample [O]s). The others were heated at 800°C in N
2 gas followed by annealing below 400°C in O
2 gas (sample [NO]
s). It is considered that there is a difference in the configuration of substituent in the Cul-0 planes between [O]
s and [NO]
s: in [O]
s the substituent is randomly located, while in [NO]
s that makes clusters. The carrier density nH of [O]
s and [NO]
s in YBa
2(Cu
1-xCo
x)
3O
y system decreases with an increase of x. In the case of YBa
2(Cu
1-xFe
x)
3O
y system, nH Of [0]
s decreases with an increase of x, while that of [NO]
s is almost constant independent of x. The difference in the behavior of nH between YBa
2(Cu
1-xFe
x)
30
y and YBa
2(Cu
1-xCo
x)
3O
y systems seems to be due to the difference of the microscopic structure around the substituent.
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